diff --git a/build/build-image/rsyncd.sh b/build/build-image/rsyncd.sh
index ff155ded314..21546e59d48 100755
--- a/build/build-image/rsyncd.sh
+++ b/build/build-image/rsyncd.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2016 The Kubernetes Authors.
 #
diff --git a/build/common.sh b/build/common.sh
index 8b2d5f28255..383765cae54 100755
--- a/build/common.sh
+++ b/build/common.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #
diff --git a/build/copy-output.sh b/build/copy-output.sh
index 842cf0a5fbf..8b189224347 100755
--- a/build/copy-output.sh
+++ b/build/copy-output.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #
diff --git a/build/lib/release.sh b/build/lib/release.sh
index e595385957a..4df80e682f1 100644
--- a/build/lib/release.sh
+++ b/build/lib/release.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2016 The Kubernetes Authors.
 #
diff --git a/build/make-build-image.sh b/build/make-build-image.sh
index d4b69605c64..8ad0e3bbd31 100755
--- a/build/make-build-image.sh
+++ b/build/make-build-image.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #
diff --git a/build/make-clean.sh b/build/make-clean.sh
index 8d82dfaaf09..af59f33d137 100755
--- a/build/make-clean.sh
+++ b/build/make-clean.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #
diff --git a/build/package-tarballs.sh b/build/package-tarballs.sh
index 3fa5cad2d77..9432015b85b 100755
--- a/build/package-tarballs.sh
+++ b/build/package-tarballs.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # Copyright 2017 The Kubernetes Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/build/release-in-a-container.sh b/build/release-in-a-container.sh
index 46dab711ffa..a160fe927b6 100755
--- a/build/release-in-a-container.sh
+++ b/build/release-in-a-container.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # Copyright 2017 The Kubernetes Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/build/release.sh b/build/release.sh
index 63d201c4740..9e7876b46c6 100755
--- a/build/release.sh
+++ b/build/release.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #
diff --git a/build/run.sh b/build/run.sh
index 5304f928037..b0465fb6b38 100755
--- a/build/run.sh
+++ b/build/run.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #
diff --git a/build/shell.sh b/build/shell.sh
index dac2e494976..7572cedbc80 100755
--- a/build/shell.sh
+++ b/build/shell.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #
diff --git a/build/util.sh b/build/util.sh
index db9a7040baf..32152ff9214 100644
--- a/build/util.sh
+++ b/build/util.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2016 The Kubernetes Authors.
 #
diff --git a/cluster/addons/addon-manager/kube-addons.sh b/cluster/addons/addon-manager/kube-addons.sh
index f2002c3fbca..eb118444d6b 100755
--- a/cluster/addons/addon-manager/kube-addons.sh
+++ b/cluster/addons/addon-manager/kube-addons.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #
diff --git a/cluster/centos/build.sh b/cluster/centos/build.sh
index 5d314371a8e..b7bc78328d6 100755
--- a/cluster/centos/build.sh
+++ b/cluster/centos/build.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2015 The Kubernetes Authors.
 #
diff --git a/cluster/centos/config-build.sh b/cluster/centos/config-build.sh
index 4854f7e1062..852c3673fdf 100755
--- a/cluster/centos/config-build.sh
+++ b/cluster/centos/config-build.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2015 The Kubernetes Authors.
 #
diff --git a/cluster/centos/config-default.sh b/cluster/centos/config-default.sh
index d24f59a90e4..0da86f28fd4 100755
--- a/cluster/centos/config-default.sh
+++ b/cluster/centos/config-default.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2015 The Kubernetes Authors.
 #
diff --git a/cluster/centos/config-test.sh b/cluster/centos/config-test.sh
index 5a0b917c579..c3a5c476f71 100644
--- a/cluster/centos/config-test.sh
+++ b/cluster/centos/config-test.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2016 The Kubernetes Authors.
 #
diff --git a/cluster/centos/deployAddons.sh b/cluster/centos/deployAddons.sh
index cefbc7c250d..349b308ddbd 100755
--- a/cluster/centos/deployAddons.sh
+++ b/cluster/centos/deployAddons.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2015 The Kubernetes Authors.
 #
diff --git a/cluster/centos/make-ca-cert.sh b/cluster/centos/make-ca-cert.sh
index c86f27bba2b..37202e3cc67 100755
--- a/cluster/centos/make-ca-cert.sh
+++ b/cluster/centos/make-ca-cert.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #
diff --git a/cluster/centos/master/scripts/apiserver.sh b/cluster/centos/master/scripts/apiserver.sh
index 686e95d68b6..89e834f9035 100755
--- a/cluster/centos/master/scripts/apiserver.sh
+++ b/cluster/centos/master/scripts/apiserver.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #
diff --git a/cluster/centos/master/scripts/controller-manager.sh b/cluster/centos/master/scripts/controller-manager.sh
index 3025d06fda4..6fcbe6f9a05 100755
--- a/cluster/centos/master/scripts/controller-manager.sh
+++ b/cluster/centos/master/scripts/controller-manager.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #
diff --git a/cluster/centos/master/scripts/flannel.sh b/cluster/centos/master/scripts/flannel.sh
index 092fcd8ff6d..745a29f08d0 100644
--- a/cluster/centos/master/scripts/flannel.sh
+++ b/cluster/centos/master/scripts/flannel.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #
diff --git a/cluster/centos/master/scripts/post-etcd.sh b/cluster/centos/master/scripts/post-etcd.sh
index be18590755c..6bdfd53094e 100644
--- a/cluster/centos/master/scripts/post-etcd.sh
+++ b/cluster/centos/master/scripts/post-etcd.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #
diff --git a/cluster/centos/master/scripts/scheduler.sh b/cluster/centos/master/scripts/scheduler.sh
index 202fb1b8d18..2d9de3a21e5 100755
--- a/cluster/centos/master/scripts/scheduler.sh
+++ b/cluster/centos/master/scripts/scheduler.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #
diff --git a/cluster/centos/node/bin/mk-docker-opts.sh b/cluster/centos/node/bin/mk-docker-opts.sh
index 041d9775838..e45dbc71bca 100755
--- a/cluster/centos/node/bin/mk-docker-opts.sh
+++ b/cluster/centos/node/bin/mk-docker-opts.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #
diff --git a/cluster/centos/node/bin/remove-docker0.sh b/cluster/centos/node/bin/remove-docker0.sh
index 04b8d824c62..8c862fbce31 100755
--- a/cluster/centos/node/bin/remove-docker0.sh
+++ b/cluster/centos/node/bin/remove-docker0.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #
diff --git a/cluster/centos/node/scripts/docker.sh b/cluster/centos/node/scripts/docker.sh
index 320446a5b79..8b878b24c9b 100755
--- a/cluster/centos/node/scripts/docker.sh
+++ b/cluster/centos/node/scripts/docker.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #
diff --git a/cluster/centos/node/scripts/flannel.sh b/cluster/centos/node/scripts/flannel.sh
index 58783c5e3b1..fe9b8e90c94 100755
--- a/cluster/centos/node/scripts/flannel.sh
+++ b/cluster/centos/node/scripts/flannel.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #
diff --git a/cluster/centos/node/scripts/kubelet.sh b/cluster/centos/node/scripts/kubelet.sh
index f11a56e9dcc..a6c0e216da8 100755
--- a/cluster/centos/node/scripts/kubelet.sh
+++ b/cluster/centos/node/scripts/kubelet.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #
diff --git a/cluster/centos/node/scripts/proxy.sh b/cluster/centos/node/scripts/proxy.sh
index 584987bf7ef..455084866ac 100755
--- a/cluster/centos/node/scripts/proxy.sh
+++ b/cluster/centos/node/scripts/proxy.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #
diff --git a/cluster/centos/util.sh b/cluster/centos/util.sh
index 10378428bca..efb1c878b13 100755
--- a/cluster/centos/util.sh
+++ b/cluster/centos/util.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2015 The Kubernetes Authors.
 #
diff --git a/cluster/clientbin.sh b/cluster/clientbin.sh
index a03a2ca3e36..94d6894ef09 100755
--- a/cluster/clientbin.sh
+++ b/cluster/clientbin.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2016 The Kubernetes Authors.
 #
diff --git a/cluster/common.sh b/cluster/common.sh
index 6bfd1e7cc63..6379219cb7f 100755
--- a/cluster/common.sh
+++ b/cluster/common.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2017 The Kubernetes Authors.
 #
diff --git a/cluster/gce/config-common.sh b/cluster/gce/config-common.sh
index 1515d3e0799..628ad582719 100644
--- a/cluster/gce/config-common.sh
+++ b/cluster/gce/config-common.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2016 The Kubernetes Authors.
 #
diff --git a/cluster/gce/config-default.sh b/cluster/gce/config-default.sh
index 5bdc4745a38..75c55705776 100755
--- a/cluster/gce/config-default.sh
+++ b/cluster/gce/config-default.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #
diff --git a/cluster/gce/config-test.sh b/cluster/gce/config-test.sh
index a3e586876c0..b7c0af202e7 100755
--- a/cluster/gce/config-test.sh
+++ b/cluster/gce/config-test.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #
diff --git a/cluster/gce/delete-stranded-load-balancers.sh b/cluster/gce/delete-stranded-load-balancers.sh
index be28ef52ab5..b03a7bba0b7 100755
--- a/cluster/gce/delete-stranded-load-balancers.sh
+++ b/cluster/gce/delete-stranded-load-balancers.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2015 The Kubernetes Authors.
 #
diff --git a/cluster/gce/gci/configure-helper.sh b/cluster/gce/gci/configure-helper.sh
index 50a11bc2494..c42912f5a4f 100644
--- a/cluster/gce/gci/configure-helper.sh
+++ b/cluster/gce/gci/configure-helper.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2016 The Kubernetes Authors.
 #
diff --git a/cluster/gce/gci/configure.sh b/cluster/gce/gci/configure.sh
index 14cc0a1e93e..4d451858a97 100644
--- a/cluster/gce/gci/configure.sh
+++ b/cluster/gce/gci/configure.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2016 The Kubernetes Authors.
 #
diff --git a/cluster/gce/gci/flexvolume_node_setup.sh b/cluster/gce/gci/flexvolume_node_setup.sh
index ce4d995e95d..140f52aef2c 100755
--- a/cluster/gce/gci/flexvolume_node_setup.sh
+++ b/cluster/gce/gci/flexvolume_node_setup.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2017 The Kubernetes Authors.
 #
@@ -119,7 +119,7 @@ generate_chroot_wrapper() {
 
       mkdir -p $wrapper_dir
       cat >$wrapper_path <<EOF
-#!/bin/bash
+#!/usr/bin/env bash
 chroot ${MOUNTER_PATH} ${driver_path} "\$@"
 EOF
 
diff --git a/cluster/gce/gci/health-monitor.sh b/cluster/gce/gci/health-monitor.sh
index 00510b4d8de..86832413908 100644
--- a/cluster/gce/gci/health-monitor.sh
+++ b/cluster/gce/gci/health-monitor.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2016 The Kubernetes Authors.
 #
diff --git a/cluster/gce/gci/helper.sh b/cluster/gce/gci/helper.sh
index e0486c80c7b..11dfd7b859b 100755
--- a/cluster/gce/gci/helper.sh
+++ b/cluster/gce/gci/helper.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2016 The Kubernetes Authors.
 #
diff --git a/cluster/gce/gci/master-helper.sh b/cluster/gce/gci/master-helper.sh
index a67f28e9e30..e86692696c7 100755
--- a/cluster/gce/gci/master-helper.sh
+++ b/cluster/gce/gci/master-helper.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2016 The Kubernetes Authors.
 #
diff --git a/cluster/gce/gci/node-helper.sh b/cluster/gce/gci/node-helper.sh
index 23ef330d539..fc782c55b51 100755
--- a/cluster/gce/gci/node-helper.sh
+++ b/cluster/gce/gci/node-helper.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2016 The Kubernetes Authors.
 #
diff --git a/cluster/gce/list-resources.sh b/cluster/gce/list-resources.sh
index e45eb14adb7..3e33075db8d 100755
--- a/cluster/gce/list-resources.sh
+++ b/cluster/gce/list-resources.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2015 The Kubernetes Authors.
 #
diff --git a/cluster/gce/upgrade-aliases.sh b/cluster/gce/upgrade-aliases.sh
index efdda8cdc5c..cc6fcb0aea3 100755
--- a/cluster/gce/upgrade-aliases.sh
+++ b/cluster/gce/upgrade-aliases.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2018 The Kubernetes Authors.
 #
diff --git a/cluster/gce/upgrade.sh b/cluster/gce/upgrade.sh
index d928fe2bea1..a2efc111bfa 100755
--- a/cluster/gce/upgrade.sh
+++ b/cluster/gce/upgrade.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2015 The Kubernetes Authors.
 #
diff --git a/cluster/gce/util.sh b/cluster/gce/util.sh
index 7159a5581c6..b97954c2112 100755
--- a/cluster/gce/util.sh
+++ b/cluster/gce/util.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2017 The Kubernetes Authors.
 #
diff --git a/cluster/get-kube-local.sh b/cluster/get-kube-local.sh
index 21a8243dd94..e308929c52b 100755
--- a/cluster/get-kube-local.sh
+++ b/cluster/get-kube-local.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2015 The Kubernetes Authors.
 #
diff --git a/cluster/juju/config-default.sh b/cluster/juju/config-default.sh
index 4a509985ed7..05e5d63ea68 100644
--- a/cluster/juju/config-default.sh
+++ b/cluster/juju/config-default.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2015 The Kubernetes Authors.
 #
diff --git a/cluster/juju/config-test.sh b/cluster/juju/config-test.sh
index 80688454783..eb58d012afa 100644
--- a/cluster/juju/config-test.sh
+++ b/cluster/juju/config-test.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2015 The Kubernetes Authors.
 #
diff --git a/cluster/juju/layers/kubernetes-e2e/actions/test b/cluster/juju/layers/kubernetes-e2e/actions/test
index 85406a691b3..56b930deeca 100755
--- a/cluster/juju/layers/kubernetes-e2e/actions/test
+++ b/cluster/juju/layers/kubernetes-e2e/actions/test
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 set -ex
 
diff --git a/cluster/juju/layers/kubernetes-master/actions/restart b/cluster/juju/layers/kubernetes-master/actions/restart
index 76827ac4c56..d1307332133 100755
--- a/cluster/juju/layers/kubernetes-master/actions/restart
+++ b/cluster/juju/layers/kubernetes-master/actions/restart
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 set +ex
 
diff --git a/cluster/juju/layers/kubernetes-master/exec.d/vmware-patch/charm-pre-install b/cluster/juju/layers/kubernetes-master/exec.d/vmware-patch/charm-pre-install
index 0f70f51cadf..b5e6d97b59d 100755
--- a/cluster/juju/layers/kubernetes-master/exec.d/vmware-patch/charm-pre-install
+++ b/cluster/juju/layers/kubernetes-master/exec.d/vmware-patch/charm-pre-install
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 MY_HOSTNAME=$(hostname)
 
 : ${JUJU_UNIT_NAME:=`uuidgen`}
diff --git a/cluster/juju/layers/kubernetes-worker/actions/pause b/cluster/juju/layers/kubernetes-worker/actions/pause
index 82b3d3838dd..184b10a67ab 100755
--- a/cluster/juju/layers/kubernetes-worker/actions/pause
+++ b/cluster/juju/layers/kubernetes-worker/actions/pause
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 set -ex
 
diff --git a/cluster/juju/layers/kubernetes-worker/actions/resume b/cluster/juju/layers/kubernetes-worker/actions/resume
index f7ef0a17f99..2092185ae8c 100755
--- a/cluster/juju/layers/kubernetes-worker/actions/resume
+++ b/cluster/juju/layers/kubernetes-worker/actions/resume
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 set -ex
 
diff --git a/cluster/juju/layers/kubernetes-worker/exec.d/vmware-patch/charm-pre-install b/cluster/juju/layers/kubernetes-worker/exec.d/vmware-patch/charm-pre-install
index 0f70f51cadf..b5e6d97b59d 100755
--- a/cluster/juju/layers/kubernetes-worker/exec.d/vmware-patch/charm-pre-install
+++ b/cluster/juju/layers/kubernetes-worker/exec.d/vmware-patch/charm-pre-install
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 MY_HOSTNAME=$(hostname)
 
 : ${JUJU_UNIT_NAME:=`uuidgen`}
diff --git a/cluster/juju/prereqs/ubuntu-juju.sh b/cluster/juju/prereqs/ubuntu-juju.sh
index 0264442e00a..74f256d78fd 100644
--- a/cluster/juju/prereqs/ubuntu-juju.sh
+++ b/cluster/juju/prereqs/ubuntu-juju.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2015 The Kubernetes Authors.
 #
diff --git a/cluster/juju/util.sh b/cluster/juju/util.sh
index 8715b4418c9..ecc23b13bb2 100755
--- a/cluster/juju/util.sh
+++ b/cluster/juju/util.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2015 The Kubernetes Authors.
 #
diff --git a/cluster/kube-down.sh b/cluster/kube-down.sh
index 2f89e6096ca..5993dc4a413 100755
--- a/cluster/kube-down.sh
+++ b/cluster/kube-down.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #
diff --git a/cluster/kube-up.sh b/cluster/kube-up.sh
index 0cc83e45a97..af85df0a838 100755
--- a/cluster/kube-up.sh
+++ b/cluster/kube-up.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #
diff --git a/cluster/kube-util.sh b/cluster/kube-util.sh
index b35fddf4f6e..8c2ebe2c24b 100755
--- a/cluster/kube-util.sh
+++ b/cluster/kube-util.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #
diff --git a/cluster/kubeadm.sh b/cluster/kubeadm.sh
index 507e60feabd..bf41090209e 100755
--- a/cluster/kubeadm.sh
+++ b/cluster/kubeadm.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2016 The Kubernetes Authors.
 #
diff --git a/cluster/kubectl.sh b/cluster/kubectl.sh
index 13cdf479157..4c03b6bfe00 100755
--- a/cluster/kubectl.sh
+++ b/cluster/kubectl.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #
diff --git a/cluster/kubemark/gce/config-default.sh b/cluster/kubemark/gce/config-default.sh
index 9116f7b5191..a343f0917bf 100644
--- a/cluster/kubemark/gce/config-default.sh
+++ b/cluster/kubemark/gce/config-default.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2017 The Kubernetes Authors.
 #
diff --git a/cluster/kubemark/pre-existing/config-default.sh b/cluster/kubemark/pre-existing/config-default.sh
index d6e4ab51871..de19312971c 100644
--- a/cluster/kubemark/pre-existing/config-default.sh
+++ b/cluster/kubemark/pre-existing/config-default.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # Copyright 2017 The Kubernetes Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/cluster/kubemark/util.sh b/cluster/kubemark/util.sh
index 3b48f87a258..348f3d009d0 100644
--- a/cluster/kubemark/util.sh
+++ b/cluster/kubemark/util.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #
diff --git a/cluster/kubernetes-anywhere/util.sh b/cluster/kubernetes-anywhere/util.sh
index 8d80b103dab..46fedc14042 100755
--- a/cluster/kubernetes-anywhere/util.sh
+++ b/cluster/kubernetes-anywhere/util.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # Copyright 2017 The Kubernetes Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/cluster/local/util.sh b/cluster/local/util.sh
index 92e32815285..4c437f68661 100755
--- a/cluster/local/util.sh
+++ b/cluster/local/util.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # Copyright 2016 The Kubernetes Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/cluster/log-dump/log-dump.sh b/cluster/log-dump/log-dump.sh
index f61c6de34dc..f106a1b8008 100755
--- a/cluster/log-dump/log-dump.sh
+++ b/cluster/log-dump/log-dump.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2017 The Kubernetes Authors.
 #
diff --git a/cluster/pre-existing/util.sh b/cluster/pre-existing/util.sh
index 8443653c5a2..f77b15e910e 100644
--- a/cluster/pre-existing/util.sh
+++ b/cluster/pre-existing/util.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2017 The Kubernetes Authors.
 #
diff --git a/cluster/restore-from-backup.sh b/cluster/restore-from-backup.sh
index 1ef4d861952..5aab78f5081 100755
--- a/cluster/restore-from-backup.sh
+++ b/cluster/restore-from-backup.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2016 The Kubernetes Authors.
 #
diff --git a/cluster/skeleton/util.sh b/cluster/skeleton/util.sh
index 0cd4756101a..6b15ca7869e 100644
--- a/cluster/skeleton/util.sh
+++ b/cluster/skeleton/util.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2016 The Kubernetes Authors.
 #
diff --git a/cluster/test-e2e.sh b/cluster/test-e2e.sh
index 4b33ffca7b4..4ea71b80c75 100755
--- a/cluster/test-e2e.sh
+++ b/cluster/test-e2e.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #
diff --git a/cluster/test-network.sh b/cluster/test-network.sh
index 37f54ba0306..239bb8aa153 100755
--- a/cluster/test-network.sh
+++ b/cluster/test-network.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #
diff --git a/cluster/test-smoke.sh b/cluster/test-smoke.sh
index 11edd18540e..3e0561d8989 100755
--- a/cluster/test-smoke.sh
+++ b/cluster/test-smoke.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #
diff --git a/cluster/update-storage-objects.sh b/cluster/update-storage-objects.sh
index f1c92b87051..386d2339597 100755
--- a/cluster/update-storage-objects.sh
+++ b/cluster/update-storage-objects.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2015 The Kubernetes Authors.
 #
diff --git a/cluster/validate-cluster.sh b/cluster/validate-cluster.sh
index ec495069fe8..3a101193ed6 100755
--- a/cluster/validate-cluster.sh
+++ b/cluster/validate-cluster.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #
diff --git a/hack/benchmark-go.sh b/hack/benchmark-go.sh
index 01c06a742a9..17aa8c56faf 100755
--- a/hack/benchmark-go.sh
+++ b/hack/benchmark-go.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #
diff --git a/hack/build-cross.sh b/hack/build-cross.sh
index d4cc70b303d..00199528c83 100755
--- a/hack/build-cross.sh
+++ b/hack/build-cross.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #
diff --git a/hack/build-go.sh b/hack/build-go.sh
index 3dedf3a84f8..a2ff893998d 100755
--- a/hack/build-go.sh
+++ b/hack/build-go.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2016 The Kubernetes Authors.
 #
diff --git a/hack/build-ui.sh b/hack/build-ui.sh
index 7c8ea668e2b..490473cf794 100755
--- a/hack/build-ui.sh
+++ b/hack/build-ui.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #
diff --git a/hack/cherry_pick_pull.sh b/hack/cherry_pick_pull.sh
index 3dab5a4947f..f75694cc334 100755
--- a/hack/cherry_pick_pull.sh
+++ b/hack/cherry_pick_pull.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2015 The Kubernetes Authors.
 #
diff --git a/hack/dev-build-and-push.sh b/hack/dev-build-and-push.sh
index 7510bb49c4f..83721142c12 100755
--- a/hack/dev-build-and-push.sh
+++ b/hack/dev-build-and-push.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #
diff --git a/hack/dev-build-and-up.sh b/hack/dev-build-and-up.sh
index 9d2a9a104ec..816f85f8296 100755
--- a/hack/dev-build-and-up.sh
+++ b/hack/dev-build-and-up.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #
diff --git a/hack/e2e-internal/e2e-cluster-size.sh b/hack/e2e-internal/e2e-cluster-size.sh
index a0921c37438..8e604b9e37a 100755
--- a/hack/e2e-internal/e2e-cluster-size.sh
+++ b/hack/e2e-internal/e2e-cluster-size.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2015 The Kubernetes Authors.
 #
diff --git a/hack/e2e-internal/e2e-down.sh b/hack/e2e-internal/e2e-down.sh
index 99bbc4380d2..87bcb9a41e9 100755
--- a/hack/e2e-internal/e2e-down.sh
+++ b/hack/e2e-internal/e2e-down.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2015 The Kubernetes Authors.
 #
diff --git a/hack/e2e-internal/e2e-grow-cluster.sh b/hack/e2e-internal/e2e-grow-cluster.sh
index 148ac3ed1fc..67b8603d26d 100755
--- a/hack/e2e-internal/e2e-grow-cluster.sh
+++ b/hack/e2e-internal/e2e-grow-cluster.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2016 The Kubernetes Authors.
 #
diff --git a/hack/e2e-internal/e2e-shrink-cluster.sh b/hack/e2e-internal/e2e-shrink-cluster.sh
index 33e7e194504..4e67b9813c5 100755
--- a/hack/e2e-internal/e2e-shrink-cluster.sh
+++ b/hack/e2e-internal/e2e-shrink-cluster.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #
diff --git a/hack/e2e-internal/e2e-status.sh b/hack/e2e-internal/e2e-status.sh
index 37691ea81c0..59a4559e9e0 100755
--- a/hack/e2e-internal/e2e-status.sh
+++ b/hack/e2e-internal/e2e-status.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2015 The Kubernetes Authors.
 #
diff --git a/hack/e2e-internal/e2e-up.sh b/hack/e2e-internal/e2e-up.sh
index 6f8facb454b..24f4f6a587f 100755
--- a/hack/e2e-internal/e2e-up.sh
+++ b/hack/e2e-internal/e2e-up.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2015 The Kubernetes Authors.
 #
diff --git a/hack/e2e-node-test.sh b/hack/e2e-node-test.sh
index e74faabbe58..4d697602fff 100755
--- a/hack/e2e-node-test.sh
+++ b/hack/e2e-node-test.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2016 The Kubernetes Authors.
 #
diff --git a/hack/gen-swagger-doc/gen-swagger-docs.sh b/hack/gen-swagger-doc/gen-swagger-docs.sh
index a6c9b2b86b0..381499d2f6a 100755
--- a/hack/gen-swagger-doc/gen-swagger-docs.sh
+++ b/hack/gen-swagger-doc/gen-swagger-docs.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #
diff --git a/hack/generate-bindata.sh b/hack/generate-bindata.sh
index 6d2ec0a5d71..b3caf1e19fc 100755
--- a/hack/generate-bindata.sh
+++ b/hack/generate-bindata.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2016 The Kubernetes Authors.
 #
diff --git a/hack/generate-docs.sh b/hack/generate-docs.sh
index 8fdf81a7d38..6071d562f93 100755
--- a/hack/generate-docs.sh
+++ b/hack/generate-docs.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #
diff --git a/hack/get-build.sh b/hack/get-build.sh
index 1e4d75791a1..f1fbe0289a6 100755
--- a/hack/get-build.sh
+++ b/hack/get-build.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2015 The Kubernetes Authors.
 #
diff --git a/hack/ginkgo-e2e.sh b/hack/ginkgo-e2e.sh
index 8472115da2b..4a01b7653b1 100755
--- a/hack/ginkgo-e2e.sh
+++ b/hack/ginkgo-e2e.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #
diff --git a/hack/godep-restore.sh b/hack/godep-restore.sh
index 5da18d8f089..02b7dbb55e0 100755
--- a/hack/godep-restore.sh
+++ b/hack/godep-restore.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2017 The Kubernetes Authors.
 #
diff --git a/hack/godep-save.sh b/hack/godep-save.sh
index 0133752de45..1ed15517fb2 100755
--- a/hack/godep-save.sh
+++ b/hack/godep-save.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2016 The Kubernetes Authors.
 #
diff --git a/hack/grab-profiles.sh b/hack/grab-profiles.sh
index e1d44f3a558..e9b4b09f536 100755
--- a/hack/grab-profiles.sh
+++ b/hack/grab-profiles.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2015 The Kubernetes Authors.
 #
diff --git a/hack/install-etcd.sh b/hack/install-etcd.sh
index 365bab8aaef..3f5961a536e 100755
--- a/hack/install-etcd.sh
+++ b/hack/install-etcd.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #
diff --git a/hack/jenkins/benchmark-dockerized.sh b/hack/jenkins/benchmark-dockerized.sh
index 2d21f8f8030..4171cf6510d 100755
--- a/hack/jenkins/benchmark-dockerized.sh
+++ b/hack/jenkins/benchmark-dockerized.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2018 The Kubernetes Authors.
 #
diff --git a/hack/jenkins/build.sh b/hack/jenkins/build.sh
index ca25459a93b..02b90370fa2 100755
--- a/hack/jenkins/build.sh
+++ b/hack/jenkins/build.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2015 The Kubernetes Authors.
 #
diff --git a/hack/jenkins/gotest.sh b/hack/jenkins/gotest.sh
index df9e6696d6f..cc298ccaa49 100755
--- a/hack/jenkins/gotest.sh
+++ b/hack/jenkins/gotest.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2015 The Kubernetes Authors.
 #
diff --git a/hack/jenkins/test-dockerized.sh b/hack/jenkins/test-dockerized.sh
index f16e48da016..48f8306ce5b 100755
--- a/hack/jenkins/test-dockerized.sh
+++ b/hack/jenkins/test-dockerized.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2015 The Kubernetes Authors.
 #
diff --git a/hack/jenkins/upload-to-gcs.sh b/hack/jenkins/upload-to-gcs.sh
index aca420eeb29..116a8aea1c0 100755
--- a/hack/jenkins/upload-to-gcs.sh
+++ b/hack/jenkins/upload-to-gcs.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2015 The Kubernetes Authors.
 #
diff --git a/hack/jenkins/verify-dockerized.sh b/hack/jenkins/verify-dockerized.sh
index ba34d07df34..a15c811aa02 100755
--- a/hack/jenkins/verify-dockerized.sh
+++ b/hack/jenkins/verify-dockerized.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2016 The Kubernetes Authors.
 #
diff --git a/hack/jenkins/verify.sh b/hack/jenkins/verify.sh
index 7393f6b4a78..6c2f8570863 100755
--- a/hack/jenkins/verify.sh
+++ b/hack/jenkins/verify.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2015 The Kubernetes Authors.
 #
diff --git a/hack/lib/etcd.sh b/hack/lib/etcd.sh
index 10e27d2c26f..3719dbf67ba 100755
--- a/hack/lib/etcd.sh
+++ b/hack/lib/etcd.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #
diff --git a/hack/lib/golang.sh b/hack/lib/golang.sh
index 5f56a81500d..9d73fcaaa12 100755
--- a/hack/lib/golang.sh
+++ b/hack/lib/golang.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #
diff --git a/hack/lib/init.sh b/hack/lib/init.sh
index bd0a5e3fbfc..8b9cd6b6a53 100755
--- a/hack/lib/init.sh
+++ b/hack/lib/init.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #
diff --git a/hack/lib/logging.sh b/hack/lib/logging.sh
index 1c74f66528b..458c218867b 100644
--- a/hack/lib/logging.sh
+++ b/hack/lib/logging.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #
diff --git a/hack/lib/protoc.sh b/hack/lib/protoc.sh
index 935f3315fa2..2ba21ecee92 100644
--- a/hack/lib/protoc.sh
+++ b/hack/lib/protoc.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2017 The Kubernetes Authors.
 #
diff --git a/hack/lib/swagger.sh b/hack/lib/swagger.sh
index fc0ac6b068f..da63a90d9d8 100644
--- a/hack/lib/swagger.sh
+++ b/hack/lib/swagger.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2016 The Kubernetes Authors.
 #
diff --git a/hack/lib/test.sh b/hack/lib/test.sh
index 5725787da7d..291e76612eb 100644
--- a/hack/lib/test.sh
+++ b/hack/lib/test.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2015 The Kubernetes Authors.
 #
diff --git a/hack/lib/util.sh b/hack/lib/util.sh
index c2fa5de2898..950518b08cc 100755
--- a/hack/lib/util.sh
+++ b/hack/lib/util.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #
@@ -554,7 +554,7 @@ function kube::util::create_signing_certkey {
     local id=$3
     local purpose=$4
     # Create client ca
-    ${sudo} /bin/bash -e <<EOF
+    ${sudo} /usr/bin/env bash -e <<EOF
     rm -f "${dest_dir}/${id}-ca.crt" "${dest_dir}/${id}-ca.key"
     ${OPENSSL_BIN} req -x509 -sha256 -new -nodes -days 365 -newkey rsa:2048 -keyout "${dest_dir}/${id}-ca.key" -out "${dest_dir}/${id}-ca.crt" -subj "/C=xx/ST=x/L=x/O=x/OU=x/CN=ca/emailAddress=x/"
     echo '{"signing":{"default":{"expiry":"43800h","usages":["signing","key encipherment",${purpose}]}}}' > "${dest_dir}/${id}-ca-config.json"
@@ -576,7 +576,7 @@ function kube::util::create_client_certkey {
         SEP=","
         shift 1
     done
-    ${sudo} /bin/bash -e <<EOF
+    ${sudo} /usr/bin/env bash -e <<EOF
     cd ${dest_dir}
     echo '{"CN":"${cn}","names":[${groups}],"hosts":[""],"key":{"algo":"rsa","size":2048}}' | ${CFSSL_BIN} gencert -ca=${ca}.crt -ca-key=${ca}.key -config=${ca}-config.json - | ${CFSSLJSON_BIN} -bare client-${id}
     mv "client-${id}-key.pem" "client-${id}.key"
@@ -600,7 +600,7 @@ function kube::util::create_serving_certkey {
         SEP=","
         shift 1
     done
-    ${sudo} /bin/bash -e <<EOF
+    ${sudo} /usr/bin/env bash -e <<EOF
     cd ${dest_dir}
     echo '{"CN":"${cn}","hosts":[${hosts}],"key":{"algo":"rsa","size":2048}}' | ${CFSSL_BIN} gencert -ca=${ca}.crt -ca-key=${ca}.key -config=${ca}-config.json - | ${CFSSLJSON_BIN} -bare serving-${id}
     mv "serving-${id}-key.pem" "serving-${id}.key"
@@ -642,7 +642,7 @@ EOF
 
     # flatten the kubeconfig files to make them self contained
     username=$(whoami)
-    ${sudo} /bin/bash -e <<EOF
+    ${sudo} /usr/bin/env bash -e <<EOF
     $(kube::util::find-binary kubectl) --kubeconfig="${dest_dir}/${client_id}.kubeconfig" config view --minify --flatten > "/tmp/${client_id}.kubeconfig"
     mv -f "/tmp/${client_id}.kubeconfig" "${dest_dir}/${client_id}.kubeconfig"
     chown ${username} "${dest_dir}/${client_id}.kubeconfig"
diff --git a/hack/lib/version.sh b/hack/lib/version.sh
index 5d77bd0b9ef..cac14eddb4a 100644
--- a/hack/lib/version.sh
+++ b/hack/lib/version.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #
diff --git a/hack/list-feature-tests.sh b/hack/list-feature-tests.sh
index 72ae001261a..5d5fcf4339b 100755
--- a/hack/list-feature-tests.sh
+++ b/hack/list-feature-tests.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2016 The Kubernetes Authors.
 #
diff --git a/hack/local-up-cluster.sh b/hack/local-up-cluster.sh
index 5373468953f..7191c5fb697 100755
--- a/hack/local-up-cluster.sh
+++ b/hack/local-up-cluster.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #
diff --git a/hack/make-rules/build.sh b/hack/make-rules/build.sh
index 472151af118..b2496eee121 100755
--- a/hack/make-rules/build.sh
+++ b/hack/make-rules/build.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #
diff --git a/hack/make-rules/clean.sh b/hack/make-rules/clean.sh
index ccf0dfc0d9d..2dc229ebeee 100755
--- a/hack/make-rules/clean.sh
+++ b/hack/make-rules/clean.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2017 The Kubernetes Authors.
 #
diff --git a/hack/make-rules/cross.sh b/hack/make-rules/cross.sh
index e2c2f9f44d0..8e1e93854ee 100755
--- a/hack/make-rules/cross.sh
+++ b/hack/make-rules/cross.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #
diff --git a/hack/make-rules/helpers/cache_go_dirs.sh b/hack/make-rules/helpers/cache_go_dirs.sh
index 82402c66767..35445c675af 100755
--- a/hack/make-rules/helpers/cache_go_dirs.sh
+++ b/hack/make-rules/helpers/cache_go_dirs.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #
diff --git a/hack/make-rules/make-help.sh b/hack/make-rules/make-help.sh
index e34c4170865..7228a4bd4c7 100755
--- a/hack/make-rules/make-help.sh
+++ b/hack/make-rules/make-help.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2016 The Kubernetes Authors.
 #
diff --git a/hack/make-rules/test-cmd-util.sh b/hack/make-rules/test-cmd-util.sh
index 80cf0d7c762..f451d6fbc9f 100755
--- a/hack/make-rules/test-cmd-util.sh
+++ b/hack/make-rules/test-cmd-util.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2016 The Kubernetes Authors.
 #
@@ -656,7 +656,7 @@ run_pod_tests() {
   kube::test::get_object_assert rc "{{range.items}}{{$id_field}}:{{end}}" ''
   ## kubectl create --edit can update the label filed of multiple resources. tmp-editor.sh is a fake editor
   TEMP=$(mktemp /tmp/tmp-editor-XXXXXXXX.sh)
-  echo -e "#!/bin/bash\n${SED} -i \"s/mock/modified/g\" \$1" > ${TEMP}
+  echo -e "#!/usr/bin/env bash\n${SED} -i \"s/mock/modified/g\" \$1" > ${TEMP}
   chmod +x ${TEMP}
   # Command
   EDITOR=${TEMP} kubectl create --edit -f hack/testdata/multi-resource-json.json "${kube_flags[@]}"
@@ -803,7 +803,7 @@ __EOF__
   kubectl delete node node-v1-test "${kube_flags[@]}"
 
   ## kubectl edit can update the image field of a POD. tmp-editor.sh is a fake editor
-  echo -e "#!/bin/bash\n${SED} -i \"s/nginx/k8s.gcr.io\/serve_hostname/g\" \$1" > /tmp/tmp-editor.sh
+  echo -e "#!/usr/bin/env bash\n${SED} -i \"s/nginx/k8s.gcr.io\/serve_hostname/g\" \$1" > /tmp/tmp-editor.sh
   chmod +x /tmp/tmp-editor.sh
   # Pre-condition: valid-pod POD has image nginx
   kube::test::get_object_assert pods "{{range.items}}{{$image_field}}:{{end}}" 'nginx:'
@@ -1209,7 +1209,7 @@ run_save_config_tests() {
   ! [[ "$(kubectl get pods test-pod -o yaml "${kube_flags[@]}" | grep kubectl.kubernetes.io/last-applied-configuration)" ]]
   # Command: edit the pod "test-pod"
   temp_editor="${KUBE_TEMP}/tmp-editor.sh"
-  echo -e "#!/bin/bash\n${SED} -i \"s/test-pod-label/test-pod-label-edited/g\" \$@" > "${temp_editor}"
+  echo -e "#!/usr/bin/env bash\n${SED} -i \"s/test-pod-label/test-pod-label-edited/g\" \$@" > "${temp_editor}"
   chmod +x "${temp_editor}"
   EDITOR=${temp_editor} kubectl edit pod test-pod --save-config "${kube_flags[@]}"
   # Post-Condition: pod "test-pod" has configuration annotation
@@ -2080,7 +2080,7 @@ run_recursive_resources_tests() {
   # Pre-condition: busybox0 & busybox1 PODs exist
   kube::test::get_object_assert pods "{{range.items}}{{$id_field}}:{{end}}" 'busybox0:busybox1:'
   # Command
-  echo -e '#!/bin/bash\nsed -i "s/image: busybox/image: prom\/busybox/g" $1' > /tmp/tmp-editor.sh
+  echo -e '#!/usr/bin/env bash\nsed -i "s/image: busybox/image: prom\/busybox/g" $1' > /tmp/tmp-editor.sh
   chmod +x /tmp/tmp-editor.sh
   output_message=$(! EDITOR=/tmp/tmp-editor.sh kubectl edit -f hack/testdata/recursive/pod --recursive 2>&1 "${kube_flags[@]}")
   # Post-condition: busybox0 & busybox1 PODs are not edited, and since busybox2 is malformed, it should error
@@ -3556,7 +3556,7 @@ run_multi_resources_tests() {
     fi
     # Command: kubectl edit multiple resources
     temp_editor="${KUBE_TEMP}/tmp-editor.sh"
-    echo -e "#!/bin/bash\n${SED} -i \"s/status\:\ replaced/status\:\ edited/g\" \$@" > "${temp_editor}"
+    echo -e "#!/usr/bin/env bash\n${SED} -i \"s/status\:\ replaced/status\:\ edited/g\" \$@" > "${temp_editor}"
     chmod +x "${temp_editor}"
     EDITOR="${temp_editor}" kubectl edit "${kube_flags[@]}" -f "${file}"
     # Post-condition: mock service (and mock2) and mock rc (and mock2) are edited
diff --git a/hack/make-rules/test-cmd.sh b/hack/make-rules/test-cmd.sh
index b68f1eecadf..a4b4ef33b00 100755
--- a/hack/make-rules/test-cmd.sh
+++ b/hack/make-rules/test-cmd.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #
diff --git a/hack/make-rules/test-e2e-node.sh b/hack/make-rules/test-e2e-node.sh
index 3ce6fa36e1f..2e5c95ae264 100755
--- a/hack/make-rules/test-e2e-node.sh
+++ b/hack/make-rules/test-e2e-node.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2016 The Kubernetes Authors.
 #
diff --git a/hack/make-rules/test-integration.sh b/hack/make-rules/test-integration.sh
index b545e2574c2..b69124df07c 100755
--- a/hack/make-rules/test-integration.sh
+++ b/hack/make-rules/test-integration.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #
diff --git a/hack/make-rules/test-kubeadm-cmd.sh b/hack/make-rules/test-kubeadm-cmd.sh
index fadb83bdf3a..86d82b08926 100755
--- a/hack/make-rules/test-kubeadm-cmd.sh
+++ b/hack/make-rules/test-kubeadm-cmd.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2016 The Kubernetes Authors.
 #
diff --git a/hack/make-rules/test.sh b/hack/make-rules/test.sh
index 54feeea8ea8..d935a5c84aa 100755
--- a/hack/make-rules/test.sh
+++ b/hack/make-rules/test.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #
diff --git a/hack/make-rules/update.sh b/hack/make-rules/update.sh
index 3ba685e8645..0dd3ba22268 100755
--- a/hack/make-rules/update.sh
+++ b/hack/make-rules/update.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #
diff --git a/hack/make-rules/verify.sh b/hack/make-rules/verify.sh
index 13fe2a13b4f..75fc4083eae 100755
--- a/hack/make-rules/verify.sh
+++ b/hack/make-rules/verify.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #
diff --git a/hack/make-rules/vet.sh b/hack/make-rules/vet.sh
index 0b6efb05184..65a0d4945f9 100755
--- a/hack/make-rules/vet.sh
+++ b/hack/make-rules/vet.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2016 The Kubernetes Authors.
 #
diff --git a/hack/run-in-gopath.sh b/hack/run-in-gopath.sh
index bbd4dd3d156..e83dc2cd6ed 100755
--- a/hack/run-in-gopath.sh
+++ b/hack/run-in-gopath.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2016 The Kubernetes Authors.
 #
diff --git a/hack/test-go.sh b/hack/test-go.sh
index a1e4e92189a..380e8d18d40 100755
--- a/hack/test-go.sh
+++ b/hack/test-go.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2016 The Kubernetes Authors.
 #
diff --git a/hack/test-integration.sh b/hack/test-integration.sh
index ad928e03ffe..59a082c73cd 100755
--- a/hack/test-integration.sh
+++ b/hack/test-integration.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2016 The Kubernetes Authors.
 #
diff --git a/hack/test-update-storage-objects.sh b/hack/test-update-storage-objects.sh
index 4c5cc2d7455..8d345a1b430 100755
--- a/hack/test-update-storage-objects.sh
+++ b/hack/test-update-storage-objects.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #
diff --git a/hack/update-all.sh b/hack/update-all.sh
index 2a9f282bfdd..ba4311f1c8c 100755
--- a/hack/update-all.sh
+++ b/hack/update-all.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2018 The Kubernetes Authors.
 #
diff --git a/hack/update-api-reference-docs.sh b/hack/update-api-reference-docs.sh
index 6fb808f7a1c..59296e4624b 100755
--- a/hack/update-api-reference-docs.sh
+++ b/hack/update-api-reference-docs.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2016 The Kubernetes Authors.
 #
diff --git a/hack/update-cloudprovider-gce.sh b/hack/update-cloudprovider-gce.sh
index 90b8659c563..b35c429f8a9 100755
--- a/hack/update-cloudprovider-gce.sh
+++ b/hack/update-cloudprovider-gce.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2018 The Kubernetes Authors.
 #
diff --git a/hack/update-codegen.sh b/hack/update-codegen.sh
index df54bd92206..a099b1dc69d 100755
--- a/hack/update-codegen.sh
+++ b/hack/update-codegen.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #
diff --git a/hack/update-generated-device-plugin-dockerized.sh b/hack/update-generated-device-plugin-dockerized.sh
index 132f0650b46..62c5fb34d0d 100755
--- a/hack/update-generated-device-plugin-dockerized.sh
+++ b/hack/update-generated-device-plugin-dockerized.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2017 The Kubernetes Authors.
 #
diff --git a/hack/update-generated-device-plugin.sh b/hack/update-generated-device-plugin.sh
index b7e2b5723ee..bfd63d8659e 100755
--- a/hack/update-generated-device-plugin.sh
+++ b/hack/update-generated-device-plugin.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2017 The Kubernetes Authors.
 #
diff --git a/hack/update-generated-docs.sh b/hack/update-generated-docs.sh
index 6d5ed939ff1..d1f49ef5335 100755
--- a/hack/update-generated-docs.sh
+++ b/hack/update-generated-docs.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #
diff --git a/hack/update-generated-kms-dockerized.sh b/hack/update-generated-kms-dockerized.sh
index 102e2535929..7d61e67e222 100755
--- a/hack/update-generated-kms-dockerized.sh
+++ b/hack/update-generated-kms-dockerized.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2018 The Kubernetes Authors.
 #
diff --git a/hack/update-generated-kms.sh b/hack/update-generated-kms.sh
index 95a0ee80ca3..431b1bf41b4 100755
--- a/hack/update-generated-kms.sh
+++ b/hack/update-generated-kms.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2018 The Kubernetes Authors.
 #
diff --git a/hack/update-generated-protobuf-dockerized.sh b/hack/update-generated-protobuf-dockerized.sh
index 2b95f6e27ed..ef49dffcb6b 100755
--- a/hack/update-generated-protobuf-dockerized.sh
+++ b/hack/update-generated-protobuf-dockerized.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2015 The Kubernetes Authors.
 #
diff --git a/hack/update-generated-protobuf.sh b/hack/update-generated-protobuf.sh
index f2cf01c0f0d..bf8c5d4002f 100755
--- a/hack/update-generated-protobuf.sh
+++ b/hack/update-generated-protobuf.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2015 The Kubernetes Authors.
 #
diff --git a/hack/update-generated-runtime-dockerized.sh b/hack/update-generated-runtime-dockerized.sh
index 13d9c224410..43dbc560fce 100755
--- a/hack/update-generated-runtime-dockerized.sh
+++ b/hack/update-generated-runtime-dockerized.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2016 The Kubernetes Authors.
 #
diff --git a/hack/update-generated-runtime.sh b/hack/update-generated-runtime.sh
index c347c01a69f..04b879910c0 100755
--- a/hack/update-generated-runtime.sh
+++ b/hack/update-generated-runtime.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2016 The Kubernetes Authors.
 #
diff --git a/hack/update-generated-swagger-docs.sh b/hack/update-generated-swagger-docs.sh
index 0e91c994141..536ec65b1ed 100755
--- a/hack/update-generated-swagger-docs.sh
+++ b/hack/update-generated-swagger-docs.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2015 The Kubernetes Authors.
 #
diff --git a/hack/update-gofmt.sh b/hack/update-gofmt.sh
index 83800c6eeed..c3220e3bbda 100755
--- a/hack/update-gofmt.sh
+++ b/hack/update-gofmt.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #
diff --git a/hack/update-openapi-spec.sh b/hack/update-openapi-spec.sh
index b0016bc29b9..09ff980a718 100755
--- a/hack/update-openapi-spec.sh
+++ b/hack/update-openapi-spec.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2016 The Kubernetes Authors.
 #
diff --git a/hack/update-staging-godeps-dockerized.sh b/hack/update-staging-godeps-dockerized.sh
index 9399ba7bf36..877e43b2d25 100755
--- a/hack/update-staging-godeps-dockerized.sh
+++ b/hack/update-staging-godeps-dockerized.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2017 The Kubernetes Authors.
 #
diff --git a/hack/update-staging-godeps.sh b/hack/update-staging-godeps.sh
index 0b5c11b1d5b..75da7a411a5 100755
--- a/hack/update-staging-godeps.sh
+++ b/hack/update-staging-godeps.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2017 The Kubernetes Authors.
 #
diff --git a/hack/update-swagger-spec.sh b/hack/update-swagger-spec.sh
index fc363fa57c9..fef20e8e5aa 100755
--- a/hack/update-swagger-spec.sh
+++ b/hack/update-swagger-spec.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2015 The Kubernetes Authors.
 #
diff --git a/hack/update-translations.sh b/hack/update-translations.sh
index 65d9c728535..69b4e50c83a 100755
--- a/hack/update-translations.sh
+++ b/hack/update-translations.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2017 The Kubernetes Authors.
 #
diff --git a/hack/verify-all.sh b/hack/verify-all.sh
index 45a9a571e13..75ab1e9e927 100755
--- a/hack/verify-all.sh
+++ b/hack/verify-all.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2016 The Kubernetes Authors.
 #
diff --git a/hack/verify-api-groups.sh b/hack/verify-api-groups.sh
index 88de8b7f6ab..27563730119 100755
--- a/hack/verify-api-groups.sh
+++ b/hack/verify-api-groups.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2016 The Kubernetes Authors.
 #
diff --git a/hack/verify-api-reference-docs.sh b/hack/verify-api-reference-docs.sh
index e41256f9c9a..afc2c79cc99 100755
--- a/hack/verify-api-reference-docs.sh
+++ b/hack/verify-api-reference-docs.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2015 The Kubernetes Authors.
 #
diff --git a/hack/verify-boilerplate.sh b/hack/verify-boilerplate.sh
index 149bf117115..cb45b73dde8 100755
--- a/hack/verify-boilerplate.sh
+++ b/hack/verify-boilerplate.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #
diff --git a/hack/verify-cli-conventions.sh b/hack/verify-cli-conventions.sh
index 935d5dc0d71..337bec95ce2 100755
--- a/hack/verify-cli-conventions.sh
+++ b/hack/verify-cli-conventions.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2016 The Kubernetes Authors.
 #
diff --git a/hack/verify-cloudprovider-gce.sh b/hack/verify-cloudprovider-gce.sh
index 1aae5aae42a..c6b3bd89af7 100755
--- a/hack/verify-cloudprovider-gce.sh
+++ b/hack/verify-cloudprovider-gce.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2018 The Kubernetes Authors.
 #
diff --git a/hack/verify-codegen.sh b/hack/verify-codegen.sh
index 02b979c2f9a..3a5b69394c9 100755
--- a/hack/verify-codegen.sh
+++ b/hack/verify-codegen.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #
diff --git a/hack/verify-description.sh b/hack/verify-description.sh
index 79fc2f3bc69..d35145f95fd 100755
--- a/hack/verify-description.sh
+++ b/hack/verify-description.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #
diff --git a/hack/verify-generated-device-plugin.sh b/hack/verify-generated-device-plugin.sh
index 7427a9811cb..817ffda3605 100755
--- a/hack/verify-generated-device-plugin.sh
+++ b/hack/verify-generated-device-plugin.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2017 The Kubernetes Authors.
 #
diff --git a/hack/verify-generated-docs.sh b/hack/verify-generated-docs.sh
index 9331343b1e5..d583abc0519 100755
--- a/hack/verify-generated-docs.sh
+++ b/hack/verify-generated-docs.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #
diff --git a/hack/verify-generated-files-remake.sh b/hack/verify-generated-files-remake.sh
index c4b43415e4a..9c80a6bc013 100644
--- a/hack/verify-generated-files-remake.sh
+++ b/hack/verify-generated-files-remake.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2017 The Kubernetes Authors.
 #
diff --git a/hack/verify-generated-kms.sh b/hack/verify-generated-kms.sh
index 03738b52e04..eeff02dbf40 100755
--- a/hack/verify-generated-kms.sh
+++ b/hack/verify-generated-kms.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2018 The Kubernetes Authors.
 #
diff --git a/hack/verify-generated-protobuf.sh b/hack/verify-generated-protobuf.sh
index a57f0fe4d77..a692687e2a8 100755
--- a/hack/verify-generated-protobuf.sh
+++ b/hack/verify-generated-protobuf.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2015 The Kubernetes Authors.
 #
diff --git a/hack/verify-generated-runtime.sh b/hack/verify-generated-runtime.sh
index 3e1132547a7..6443cc4f9cb 100755
--- a/hack/verify-generated-runtime.sh
+++ b/hack/verify-generated-runtime.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2016 The Kubernetes Authors.
 #
diff --git a/hack/verify-generated-swagger-docs.sh b/hack/verify-generated-swagger-docs.sh
index ef93c4e0613..eec14769bbe 100755
--- a/hack/verify-generated-swagger-docs.sh
+++ b/hack/verify-generated-swagger-docs.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2015 The Kubernetes Authors.
 #
diff --git a/hack/verify-godeps.sh b/hack/verify-godeps.sh
index 7938c310a70..a7f46f99a7b 100755
--- a/hack/verify-godeps.sh
+++ b/hack/verify-godeps.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2015 The Kubernetes Authors.
 #
diff --git a/hack/verify-gofmt.sh b/hack/verify-gofmt.sh
index 3ec0e61d69f..ff8797d18db 100755
--- a/hack/verify-gofmt.sh
+++ b/hack/verify-gofmt.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #
diff --git a/hack/verify-golint.sh b/hack/verify-golint.sh
index 1b0b04430c7..0829f18efdc 100755
--- a/hack/verify-golint.sh
+++ b/hack/verify-golint.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #
diff --git a/hack/verify-govet.sh b/hack/verify-govet.sh
index 223821d08c4..edc0d314ab8 100755
--- a/hack/verify-govet.sh
+++ b/hack/verify-govet.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2016 The Kubernetes Authors.
 #
diff --git a/hack/verify-import-boss.sh b/hack/verify-import-boss.sh
index 7e112a4ac69..30681fbbdde 100755
--- a/hack/verify-import-boss.sh
+++ b/hack/verify-import-boss.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #
diff --git a/hack/verify-imports.sh b/hack/verify-imports.sh
index a845fa2a0b3..ba9951bdaca 100755
--- a/hack/verify-imports.sh
+++ b/hack/verify-imports.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2017 The Kubernetes Authors.
 #
diff --git a/hack/verify-linkcheck.sh b/hack/verify-linkcheck.sh
index 69427f3ba3f..493c0f87028 100755
--- a/hack/verify-linkcheck.sh
+++ b/hack/verify-linkcheck.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #
diff --git a/hack/verify-no-vendor-cycles.sh b/hack/verify-no-vendor-cycles.sh
index 02fa8b294ce..e245f76954f 100755
--- a/hack/verify-no-vendor-cycles.sh
+++ b/hack/verify-no-vendor-cycles.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2017 The Kubernetes Authors.
 #
diff --git a/hack/verify-openapi-spec.sh b/hack/verify-openapi-spec.sh
index 08b1edcbe3b..0fa03966480 100755
--- a/hack/verify-openapi-spec.sh
+++ b/hack/verify-openapi-spec.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2016 The Kubernetes Authors.
 #
diff --git a/hack/verify-pkg-names.sh b/hack/verify-pkg-names.sh
index 8fbb09282a2..34660728490 100755
--- a/hack/verify-pkg-names.sh
+++ b/hack/verify-pkg-names.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2016 The Kubernetes Authors.
 #
diff --git a/hack/verify-readonly-packages.sh b/hack/verify-readonly-packages.sh
index babf558e80d..87864a61a38 100755
--- a/hack/verify-readonly-packages.sh
+++ b/hack/verify-readonly-packages.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2017 The Kubernetes Authors.
 #
diff --git a/hack/verify-staging-godeps.sh b/hack/verify-staging-godeps.sh
index 7177ac639e9..e984d164a16 100755
--- a/hack/verify-staging-godeps.sh
+++ b/hack/verify-staging-godeps.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2017 The Kubernetes Authors.
 #
diff --git a/hack/verify-swagger-spec.sh b/hack/verify-swagger-spec.sh
index 92ee2bcb6b1..864df660bf9 100755
--- a/hack/verify-swagger-spec.sh
+++ b/hack/verify-swagger-spec.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2015 The Kubernetes Authors.
 #
diff --git a/hack/verify-symbols.sh b/hack/verify-symbols.sh
index aa5870a2960..ebd09aab173 100755
--- a/hack/verify-symbols.sh
+++ b/hack/verify-symbols.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #
diff --git a/hack/verify-test-images.sh b/hack/verify-test-images.sh
index 8c60fb4352b..7ef6a081f46 100755
--- a/hack/verify-test-images.sh
+++ b/hack/verify-test-images.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #
diff --git a/hack/verify-typecheck.sh b/hack/verify-typecheck.sh
index bd55f592961..092b8f2e0b1 100755
--- a/hack/verify-typecheck.sh
+++ b/hack/verify-typecheck.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2018 The Kubernetes Authors.
 #
diff --git a/pkg/kubectl/cmd/testdata/edit/record_editor.sh b/pkg/kubectl/cmd/testdata/edit/record_editor.sh
index 0a7d4c376ea..a2ba2d6fbce 100755
--- a/pkg/kubectl/cmd/testdata/edit/record_editor.sh
+++ b/pkg/kubectl/cmd/testdata/edit/record_editor.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2017 The Kubernetes Authors.
 #
diff --git a/pkg/kubectl/cmd/testdata/edit/record_testcase.sh b/pkg/kubectl/cmd/testdata/edit/record_testcase.sh
index 9a51c351c66..1181912dcb4 100755
--- a/pkg/kubectl/cmd/testdata/edit/record_testcase.sh
+++ b/pkg/kubectl/cmd/testdata/edit/record_testcase.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2017 The Kubernetes Authors.
 #
diff --git a/pkg/kubectl/cmd/testdata/edit/test_editor.sh b/pkg/kubectl/cmd/testdata/edit/test_editor.sh
index 268a8078c2a..387e255d0f7 100755
--- a/pkg/kubectl/cmd/testdata/edit/test_editor.sh
+++ b/pkg/kubectl/cmd/testdata/edit/test_editor.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2017 The Kubernetes Authors.
 #
diff --git a/pkg/kubelet/dockershim/network/cni/cni_test.go b/pkg/kubelet/dockershim/network/cni/cni_test.go
index 6e23c1cdea3..b8ffbe4eb11 100644
--- a/pkg/kubelet/dockershim/network/cni/cni_test.go
+++ b/pkg/kubelet/dockershim/network/cni/cni_test.go
@@ -71,7 +71,7 @@ func installPluginUnderTest(t *testing.T, testBinDir, testConfDir, testDataDir,
 	pluginExec := path.Join(testBinDir, binName)
 	f, err = os.Create(pluginExec)
 
-	const execScriptTempl = `#!/bin/bash
+	const execScriptTempl = `#!/usr/bin/env bash
 cat > {{.InputFile}}
 env > {{.OutputEnv}}
 echo "%@" >> {{.OutputEnv}}
diff --git a/pkg/util/verify-util-pkg.sh b/pkg/util/verify-util-pkg.sh
index 2b8d628ebc0..5c1fbecc71d 100755
--- a/pkg/util/verify-util-pkg.sh
+++ b/pkg/util/verify-util-pkg.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2017 The Kubernetes Authors.
 #
diff --git a/pkg/volume/flexvolume/flexvolume_test.go b/pkg/volume/flexvolume/flexvolume_test.go
index c90ad49322d..930c4665411 100644
--- a/pkg/volume/flexvolume/flexvolume_test.go
+++ b/pkg/volume/flexvolume/flexvolume_test.go
@@ -30,7 +30,7 @@ import (
 	volumetest "k8s.io/kubernetes/pkg/volume/testing"
 )
 
-const execScriptTempl1 = `#!/bin/bash
+const execScriptTempl1 = `#!/usr/bin/env bash
 if [ "$1" == "init" -a $# -eq 1 ]; then
   echo -n '{
     "status": "Success"
@@ -73,7 +73,7 @@ exit 1
 echo -n $@ &> {{.OutputFile}}
 `
 
-const execScriptTempl2 = `#!/bin/bash
+const execScriptTempl2 = `#!/usr/bin/env bash
 if [ "$1" == "init" -a $# -eq 1 ]; then
   echo -n '{
     "status": "Success"
diff --git a/plugin/pkg/admission/imagepolicy/gencerts.sh b/plugin/pkg/admission/imagepolicy/gencerts.sh
index 384e8f4e9d1..30304922d86 100755
--- a/plugin/pkg/admission/imagepolicy/gencerts.sh
+++ b/plugin/pkg/admission/imagepolicy/gencerts.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2016 The Kubernetes Authors.
 #
diff --git a/staging/src/k8s.io/apiextensions-apiserver/examples/client-go/hack/update-codegen.sh b/staging/src/k8s.io/apiextensions-apiserver/examples/client-go/hack/update-codegen.sh
index 3659ad33002..ea26ad63cca 100755
--- a/staging/src/k8s.io/apiextensions-apiserver/examples/client-go/hack/update-codegen.sh
+++ b/staging/src/k8s.io/apiextensions-apiserver/examples/client-go/hack/update-codegen.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2017 The Kubernetes Authors.
 #
diff --git a/staging/src/k8s.io/apiextensions-apiserver/examples/client-go/hack/verify-codegen.sh b/staging/src/k8s.io/apiextensions-apiserver/examples/client-go/hack/verify-codegen.sh
index 9cc02a5a4a2..d02a6fa395e 100755
--- a/staging/src/k8s.io/apiextensions-apiserver/examples/client-go/hack/verify-codegen.sh
+++ b/staging/src/k8s.io/apiextensions-apiserver/examples/client-go/hack/verify-codegen.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2017 The Kubernetes Authors.
 #
diff --git a/staging/src/k8s.io/apiextensions-apiserver/hack/build-image.sh b/staging/src/k8s.io/apiextensions-apiserver/hack/build-image.sh
index c9152a4de1c..d0d129078f3 100755
--- a/staging/src/k8s.io/apiextensions-apiserver/hack/build-image.sh
+++ b/staging/src/k8s.io/apiextensions-apiserver/hack/build-image.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2017 The Kubernetes Authors.
 #
diff --git a/staging/src/k8s.io/apiextensions-apiserver/hack/update-codegen.sh b/staging/src/k8s.io/apiextensions-apiserver/hack/update-codegen.sh
index 9c98ebf4d3a..a586b48e0eb 100755
--- a/staging/src/k8s.io/apiextensions-apiserver/hack/update-codegen.sh
+++ b/staging/src/k8s.io/apiextensions-apiserver/hack/update-codegen.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2017 The Kubernetes Authors.
 #
diff --git a/staging/src/k8s.io/apiextensions-apiserver/hack/verify-codegen.sh b/staging/src/k8s.io/apiextensions-apiserver/hack/verify-codegen.sh
index f5835c42538..ab43ba23d01 100755
--- a/staging/src/k8s.io/apiextensions-apiserver/hack/verify-codegen.sh
+++ b/staging/src/k8s.io/apiextensions-apiserver/hack/verify-codegen.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2017 The Kubernetes Authors.
 #
diff --git a/staging/src/k8s.io/apiserver/pkg/admission/plugin/webhook/testcerts/gencerts.sh b/staging/src/k8s.io/apiserver/pkg/admission/plugin/webhook/testcerts/gencerts.sh
index d4145c606ac..98503f69f44 100755
--- a/staging/src/k8s.io/apiserver/pkg/admission/plugin/webhook/testcerts/gencerts.sh
+++ b/staging/src/k8s.io/apiserver/pkg/admission/plugin/webhook/testcerts/gencerts.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2017 The Kubernetes Authors.
 #
diff --git a/staging/src/k8s.io/apiserver/pkg/util/webhook/gencerts.sh b/staging/src/k8s.io/apiserver/pkg/util/webhook/gencerts.sh
index fdceb957162..a042ab62af8 100755
--- a/staging/src/k8s.io/apiserver/pkg/util/webhook/gencerts.sh
+++ b/staging/src/k8s.io/apiserver/pkg/util/webhook/gencerts.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2017 The Kubernetes Authors.
 #
diff --git a/staging/src/k8s.io/apiserver/plugin/pkg/authenticator/token/oidc/testdata/gen.sh b/staging/src/k8s.io/apiserver/plugin/pkg/authenticator/token/oidc/testdata/gen.sh
index a3daa0fc438..922e64e5a24 100755
--- a/staging/src/k8s.io/apiserver/plugin/pkg/authenticator/token/oidc/testdata/gen.sh
+++ b/staging/src/k8s.io/apiserver/plugin/pkg/authenticator/token/oidc/testdata/gen.sh
@@ -1,4 +1,4 @@
-#!/bin/bash -e
+#!/usr/bin/env bash -e
 
 # Copyright 2018 The Kubernetes Authors.
 #
diff --git a/staging/src/k8s.io/apiserver/plugin/pkg/authorizer/webhook/gencerts.sh b/staging/src/k8s.io/apiserver/plugin/pkg/authorizer/webhook/gencerts.sh
index 8d7896fa5ee..1e5fb1fd503 100755
--- a/staging/src/k8s.io/apiserver/plugin/pkg/authorizer/webhook/gencerts.sh
+++ b/staging/src/k8s.io/apiserver/plugin/pkg/authorizer/webhook/gencerts.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2016 The Kubernetes Authors.
 #
diff --git a/staging/src/k8s.io/code-generator/hack/update-codegen.sh b/staging/src/k8s.io/code-generator/hack/update-codegen.sh
index e38a0d92c05..767c2ab36b5 100755
--- a/staging/src/k8s.io/code-generator/hack/update-codegen.sh
+++ b/staging/src/k8s.io/code-generator/hack/update-codegen.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2017 The Kubernetes Authors.
 #
diff --git a/staging/src/k8s.io/code-generator/hack/verify-codegen.sh b/staging/src/k8s.io/code-generator/hack/verify-codegen.sh
index 601a76962c8..25302228dfa 100755
--- a/staging/src/k8s.io/code-generator/hack/verify-codegen.sh
+++ b/staging/src/k8s.io/code-generator/hack/verify-codegen.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2017 The Kubernetes Authors.
 #
diff --git a/staging/src/k8s.io/kube-aggregator/hack/build-image.sh b/staging/src/k8s.io/kube-aggregator/hack/build-image.sh
index 6aae5fb6240..ee09df3ebd1 100755
--- a/staging/src/k8s.io/kube-aggregator/hack/build-image.sh
+++ b/staging/src/k8s.io/kube-aggregator/hack/build-image.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2014 The Kubernetes Authors.
 #
diff --git a/staging/src/k8s.io/kube-aggregator/hack/local-up-kube-aggregator.sh b/staging/src/k8s.io/kube-aggregator/hack/local-up-kube-aggregator.sh
index cc00878dac7..158d02affa3 100755
--- a/staging/src/k8s.io/kube-aggregator/hack/local-up-kube-aggregator.sh
+++ b/staging/src/k8s.io/kube-aggregator/hack/local-up-kube-aggregator.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2016 The Kubernetes Authors.
 #
diff --git a/staging/src/k8s.io/kube-aggregator/hack/register-all-apis-from.sh b/staging/src/k8s.io/kube-aggregator/hack/register-all-apis-from.sh
index 34f6693d7c2..fc20f937687 100755
--- a/staging/src/k8s.io/kube-aggregator/hack/register-all-apis-from.sh
+++ b/staging/src/k8s.io/kube-aggregator/hack/register-all-apis-from.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2017 The Kubernetes Authors.
 #
diff --git a/staging/src/k8s.io/kube-aggregator/hack/update-codegen.sh b/staging/src/k8s.io/kube-aggregator/hack/update-codegen.sh
index 04fcb9861c5..43a4d57156b 100755
--- a/staging/src/k8s.io/kube-aggregator/hack/update-codegen.sh
+++ b/staging/src/k8s.io/kube-aggregator/hack/update-codegen.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2016 The Kubernetes Authors.
 #
diff --git a/staging/src/k8s.io/kube-aggregator/hack/verify-codegen.sh b/staging/src/k8s.io/kube-aggregator/hack/verify-codegen.sh
index 4678e5e3c9e..9fae05895f0 100755
--- a/staging/src/k8s.io/kube-aggregator/hack/verify-codegen.sh
+++ b/staging/src/k8s.io/kube-aggregator/hack/verify-codegen.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2016 The Kubernetes Authors.
 #
diff --git a/staging/src/k8s.io/metrics/hack/update-codegen.sh b/staging/src/k8s.io/metrics/hack/update-codegen.sh
index bb55d738806..87694c333e0 100755
--- a/staging/src/k8s.io/metrics/hack/update-codegen.sh
+++ b/staging/src/k8s.io/metrics/hack/update-codegen.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2017 The Kubernetes Authors.
 #
diff --git a/staging/src/k8s.io/metrics/hack/verify-codegen.sh b/staging/src/k8s.io/metrics/hack/verify-codegen.sh
index f5835c42538..ab43ba23d01 100755
--- a/staging/src/k8s.io/metrics/hack/verify-codegen.sh
+++ b/staging/src/k8s.io/metrics/hack/verify-codegen.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2017 The Kubernetes Authors.
 #
diff --git a/staging/src/k8s.io/sample-apiserver/hack/build-image.sh b/staging/src/k8s.io/sample-apiserver/hack/build-image.sh
index c8b9df06326..c1b3c768589 100755
--- a/staging/src/k8s.io/sample-apiserver/hack/build-image.sh
+++ b/staging/src/k8s.io/sample-apiserver/hack/build-image.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2017 The Kubernetes Authors.
 #
diff --git a/staging/src/k8s.io/sample-apiserver/hack/update-codegen.sh b/staging/src/k8s.io/sample-apiserver/hack/update-codegen.sh
index b0b0cefc765..9dcc8f10242 100755
--- a/staging/src/k8s.io/sample-apiserver/hack/update-codegen.sh
+++ b/staging/src/k8s.io/sample-apiserver/hack/update-codegen.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2017 The Kubernetes Authors.
 #
diff --git a/staging/src/k8s.io/sample-apiserver/hack/verify-codegen.sh b/staging/src/k8s.io/sample-apiserver/hack/verify-codegen.sh
index f5835c42538..ab43ba23d01 100755
--- a/staging/src/k8s.io/sample-apiserver/hack/verify-codegen.sh
+++ b/staging/src/k8s.io/sample-apiserver/hack/verify-codegen.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2017 The Kubernetes Authors.
 #
diff --git a/staging/src/k8s.io/sample-controller/hack/update-codegen.sh b/staging/src/k8s.io/sample-controller/hack/update-codegen.sh
index 3697707b72d..1423a1afd9a 100755
--- a/staging/src/k8s.io/sample-controller/hack/update-codegen.sh
+++ b/staging/src/k8s.io/sample-controller/hack/update-codegen.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2017 The Kubernetes Authors.
 #
diff --git a/staging/src/k8s.io/sample-controller/hack/verify-codegen.sh b/staging/src/k8s.io/sample-controller/hack/verify-codegen.sh
index 9cc02a5a4a2..d02a6fa395e 100755
--- a/staging/src/k8s.io/sample-controller/hack/verify-codegen.sh
+++ b/staging/src/k8s.io/sample-controller/hack/verify-codegen.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2017 The Kubernetes Authors.
 #
diff --git a/test/conformance/conformance_test.sh b/test/conformance/conformance_test.sh
index 04113c09b6e..dc448849c63 100755
--- a/test/conformance/conformance_test.sh
+++ b/test/conformance/conformance_test.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # Copyright 2017 The Kubernetes Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/test/e2e_node/conformance/run_test.sh b/test/e2e_node/conformance/run_test.sh
index 6ddb2478832..3e27859ae74 100755
--- a/test/e2e_node/conformance/run_test.sh
+++ b/test/e2e_node/conformance/run_test.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2016 The Kubernetes Authors.
 #
diff --git a/test/e2e_node/environment/setup_host.sh b/test/e2e_node/environment/setup_host.sh
index 2069a3a4947..5ea0ab1dc03 100755
--- a/test/e2e_node/environment/setup_host.sh
+++ b/test/e2e_node/environment/setup_host.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2016 The Kubernetes Authors.
 #
diff --git a/test/e2e_node/gubernator.sh b/test/e2e_node/gubernator.sh
index 97f3da8ce38..a8a11bfd7b8 100755
--- a/test/e2e_node/gubernator.sh
+++ b/test/e2e_node/gubernator.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2016 The Kubernetes Authors.
 #
diff --git a/test/e2e_node/jenkins/conformance/conformance-jenkins.sh b/test/e2e_node/jenkins/conformance/conformance-jenkins.sh
index 422a149b1b9..9e8715287cf 100755
--- a/test/e2e_node/jenkins/conformance/conformance-jenkins.sh
+++ b/test/e2e_node/jenkins/conformance/conformance-jenkins.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2016 The Kubernetes Authors.
 #
diff --git a/test/e2e_node/jenkins/copy-e2e-image.sh b/test/e2e_node/jenkins/copy-e2e-image.sh
index 4389f5816a7..18ff7c6310b 100755
--- a/test/e2e_node/jenkins/copy-e2e-image.sh
+++ b/test/e2e_node/jenkins/copy-e2e-image.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2016 The Kubernetes Authors.
 #
diff --git a/test/e2e_node/jenkins/e2e-node-jenkins.sh b/test/e2e_node/jenkins/e2e-node-jenkins.sh
index c0f83e59e79..a1caae4ad95 100755
--- a/test/e2e_node/jenkins/e2e-node-jenkins.sh
+++ b/test/e2e_node/jenkins/e2e-node-jenkins.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2016 The Kubernetes Authors.
 #
diff --git a/test/e2e_node/jenkins/ubuntu-14.04-nvidia-install.sh b/test/e2e_node/jenkins/ubuntu-14.04-nvidia-install.sh
index 6d6d27719d7..f83e53c18ec 100644
--- a/test/e2e_node/jenkins/ubuntu-14.04-nvidia-install.sh
+++ b/test/e2e_node/jenkins/ubuntu-14.04-nvidia-install.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2017 The Kubernetes Authors.
 #
diff --git a/test/fixtures/pkg/kubectl/plugins/env/env.sh b/test/fixtures/pkg/kubectl/plugins/env/env.sh
index b7d005519d3..44c9a4f3357 100755
--- a/test/fixtures/pkg/kubectl/plugins/env/env.sh
+++ b/test/fixtures/pkg/kubectl/plugins/env/env.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2017 The Kubernetes Authors.
 #
diff --git a/test/fixtures/pkg/kubectl/plugins2/hello/hello.sh b/test/fixtures/pkg/kubectl/plugins2/hello/hello.sh
index 86ade760479..c3d7075b4cb 100755
--- a/test/fixtures/pkg/kubectl/plugins2/hello/hello.sh
+++ b/test/fixtures/pkg/kubectl/plugins2/hello/hello.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2017 The Kubernetes Authors.
 #
diff --git a/test/images/image-util.sh b/test/images/image-util.sh
index 5d9b777b8fc..0c092a4a99a 100755
--- a/test/images/image-util.sh
+++ b/test/images/image-util.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2017 The Kubernetes Authors.
 #
diff --git a/test/images/pets/redis-installer/on-start.sh b/test/images/pets/redis-installer/on-start.sh
index e1193889406..dd9a4e656c5 100755
--- a/test/images/pets/redis-installer/on-start.sh
+++ b/test/images/pets/redis-installer/on-start.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2016 The Kubernetes Authors.
 #
diff --git a/test/images/volumes-tester/ceph/init.sh b/test/images/volumes-tester/ceph/init.sh
index 213630dd2b5..f7981405e5d 100755
--- a/test/images/volumes-tester/ceph/init.sh
+++ b/test/images/volumes-tester/ceph/init.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2015 The Kubernetes Authors.
 #
diff --git a/test/images/volumes-tester/ceph/install.sh b/test/images/volumes-tester/ceph/install.sh
index 6a96ad9740e..5cdeecf9df4 100755
--- a/test/images/volumes-tester/ceph/install.sh
+++ b/test/images/volumes-tester/ceph/install.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2015 The Kubernetes Authors.
 #
diff --git a/test/images/volumes-tester/gluster/run_gluster.sh b/test/images/volumes-tester/gluster/run_gluster.sh
index 5e564b45bc6..0cf5cb48c31 100755
--- a/test/images/volumes-tester/gluster/run_gluster.sh
+++ b/test/images/volumes-tester/gluster/run_gluster.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2015 The Kubernetes Authors.
 #
diff --git a/test/images/volumes-tester/iscsi/create_block.sh b/test/images/volumes-tester/iscsi/create_block.sh
index 2fbc61faca2..9421568690b 100755
--- a/test/images/volumes-tester/iscsi/create_block.sh
+++ b/test/images/volumes-tester/iscsi/create_block.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2015 The Kubernetes Authors.
 #
diff --git a/test/images/volumes-tester/iscsi/run_iscsid.sh b/test/images/volumes-tester/iscsi/run_iscsid.sh
index 2720287745a..a5bded46cdb 100755
--- a/test/images/volumes-tester/iscsi/run_iscsid.sh
+++ b/test/images/volumes-tester/iscsi/run_iscsid.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2015 The Kubernetes Authors.
 #
diff --git a/test/images/volumes-tester/nfs/run_nfs.sh b/test/images/volumes-tester/nfs/run_nfs.sh
index 7b760572d15..6577e6da6ad 100755
--- a/test/images/volumes-tester/nfs/run_nfs.sh
+++ b/test/images/volumes-tester/nfs/run_nfs.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2015 The Kubernetes Authors.
 #
diff --git a/test/images/volumes-tester/rbd/bootstrap.sh b/test/images/volumes-tester/rbd/bootstrap.sh
index a147b4c8387..fb5e69c210b 100755
--- a/test/images/volumes-tester/rbd/bootstrap.sh
+++ b/test/images/volumes-tester/rbd/bootstrap.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2015 The Kubernetes Authors.
 #
diff --git a/test/images/volumes-tester/rbd/ceph.conf.sh b/test/images/volumes-tester/rbd/ceph.conf.sh
index 6ccfffda57e..6db6658d128 100755
--- a/test/images/volumes-tester/rbd/ceph.conf.sh
+++ b/test/images/volumes-tester/rbd/ceph.conf.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2015 The Kubernetes Authors.
 #
diff --git a/test/images/volumes-tester/rbd/create_block.sh b/test/images/volumes-tester/rbd/create_block.sh
index 705957b1db1..7d29aff1ea3 100755
--- a/test/images/volumes-tester/rbd/create_block.sh
+++ b/test/images/volumes-tester/rbd/create_block.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2015 The Kubernetes Authors.
 #
diff --git a/test/images/volumes-tester/rbd/mds.sh b/test/images/volumes-tester/rbd/mds.sh
index 744ccbf6b3b..a5c89677446 100755
--- a/test/images/volumes-tester/rbd/mds.sh
+++ b/test/images/volumes-tester/rbd/mds.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2017 The Kubernetes Authors.
 #
diff --git a/test/images/volumes-tester/rbd/mon.sh b/test/images/volumes-tester/rbd/mon.sh
index e97baee5a8d..6865eef6504 100755
--- a/test/images/volumes-tester/rbd/mon.sh
+++ b/test/images/volumes-tester/rbd/mon.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2015 The Kubernetes Authors.
 #
diff --git a/test/images/volumes-tester/rbd/osd.sh b/test/images/volumes-tester/rbd/osd.sh
index fb18f9cb90b..9c58ef4c7c3 100755
--- a/test/images/volumes-tester/rbd/osd.sh
+++ b/test/images/volumes-tester/rbd/osd.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2015 The Kubernetes Authors.
 #
diff --git a/test/kubemark/cloud-provider-config.sh b/test/kubemark/cloud-provider-config.sh
index abe029a0f93..ad7029f2389 100755
--- a/test/kubemark/cloud-provider-config.sh
+++ b/test/kubemark/cloud-provider-config.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2017 The Kubernetes Authors.
 #
diff --git a/test/kubemark/common/util.sh b/test/kubemark/common/util.sh
index d3c035776c2..2c7e7c119b8 100644
--- a/test/kubemark/common/util.sh
+++ b/test/kubemark/common/util.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2017 The Kubernetes Authors.
 #
diff --git a/test/kubemark/configure-kubectl.sh b/test/kubemark/configure-kubectl.sh
index 3a55de67d37..eec173b2a59 100755
--- a/test/kubemark/configure-kubectl.sh
+++ b/test/kubemark/configure-kubectl.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2015 The Kubernetes Authors.
 #
diff --git a/test/kubemark/gce/util.sh b/test/kubemark/gce/util.sh
index 8e4cc9af0c1..398913779c8 100644
--- a/test/kubemark/gce/util.sh
+++ b/test/kubemark/gce/util.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2017 The Kubernetes Authors.
 #
diff --git a/test/kubemark/master-log-dump.sh b/test/kubemark/master-log-dump.sh
index 35b04d6d3ff..beaf8ed732f 100755
--- a/test/kubemark/master-log-dump.sh
+++ b/test/kubemark/master-log-dump.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2017 The Kubernetes Authors.
 #
diff --git a/test/kubemark/pre-existing/util.sh b/test/kubemark/pre-existing/util.sh
index 107c921267d..22be7913569 100644
--- a/test/kubemark/pre-existing/util.sh
+++ b/test/kubemark/pre-existing/util.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2017 The Kubernetes Authors.
 #
diff --git a/test/kubemark/resources/start-kubemark-master.sh b/test/kubemark/resources/start-kubemark-master.sh
index f08b6ed870e..a9465d6d5a2 100755
--- a/test/kubemark/resources/start-kubemark-master.sh
+++ b/test/kubemark/resources/start-kubemark-master.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2015 The Kubernetes Authors.
 #
diff --git a/test/kubemark/run-e2e-tests.sh b/test/kubemark/run-e2e-tests.sh
index 17e1ef802a3..d110c34b87a 100755
--- a/test/kubemark/run-e2e-tests.sh
+++ b/test/kubemark/run-e2e-tests.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2015 The Kubernetes Authors.
 #
diff --git a/test/kubemark/skeleton/util.sh b/test/kubemark/skeleton/util.sh
index 4998057c832..d646b3d9f25 100644
--- a/test/kubemark/skeleton/util.sh
+++ b/test/kubemark/skeleton/util.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2017 The Kubernetes Authors.
 #
diff --git a/test/kubemark/start-kubemark.sh b/test/kubemark/start-kubemark.sh
index e0d6763d440..b8236bc133f 100755
--- a/test/kubemark/start-kubemark.sh
+++ b/test/kubemark/start-kubemark.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2015 The Kubernetes Authors.
 #
diff --git a/test/kubemark/stop-kubemark.sh b/test/kubemark/stop-kubemark.sh
index 4ffc3632fda..4645cbcd032 100755
--- a/test/kubemark/stop-kubemark.sh
+++ b/test/kubemark/stop-kubemark.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2015 The Kubernetes Authors.
 #
diff --git a/third_party/forked/shell2junit/sh2ju.sh b/third_party/forked/shell2junit/sh2ju.sh
index 64da996d631..f0891455c82 100755
--- a/third_party/forked/shell2junit/sh2ju.sh
+++ b/third_party/forked/shell2junit/sh2ju.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 ### Copyright 2010 Manuel Carrasco Moñino. (manolo at apache.org)
 ###
 ### Licensed under the Apache License, Version 2.0.