Rewrite a few scripts in Go and remove unneeded services

util/util.go

@@ -7,6 +7,7 @@ import (
 	"fmt"
 	"io/ioutil"
 	"os"
+	"os/exec"
 	"path"
 	"strings"
 
@@ -241,3 +242,29 @@ func ExistsAndExecutable(path string) bool {
 	mode := info.Mode().Perm()
 	return mode&os.ModePerm != 0
 }
+
+func RunScript(path string) error {
+	if !ExistsAndExecutable(path) {
+		return nil
+	}
+
+	script, err := os.Open(path)
+	if err != nil {
+		return err
+	}
+
+	magic := make([]byte, 2)
+	if _, err = script.Read(magic); err != nil {
+		return err
+	}
+
+	cmd := exec.Command("/bin/sh", path)
+	if string(magic) == "#!" {
+		cmd = exec.Command(path)
+	}
+
+	cmd.Stdout = os.Stdout
+	cmd.Stderr = os.Stderr
+
+	return cmd.Run()
+}