diff --git a/misc/services/life_mngr/s5_trigger.sh b/misc/services/life_mngr/s5_trigger.sh
deleted file mode 100755
index a004d1330..000000000
--- a/misc/services/life_mngr/s5_trigger.sh
+++ /dev/null
@@ -1,216 +0,0 @@
-#! /bin/bash
-# Copyright (C) 2020 Intel Corporation.
-# SPDX-License-Identifier: BSD-3-Clause
-
-MAX_ARRAY=6
-
-started="started"
-stopped="stopped"
-SOS="sos"
-UOS="uos"
-SHUTDOWN="shutdown"
-ACKED="acked"
-
-#config
-IP_ADDR="127.0.0.1"
-SOCKET_PORT="8193"
-
-#send message by socket
-send_message()
-{
-	message="$1"
-	echo "Sending: $message"
-	echo -ne "$message" >&6 &
-}
-
-#read message by socket
-read_message()
-{
-	read -r -d $'\0' ret_msg <&6
-}
-
-#send message by tty
-send_pre_message()
-{
-	message="$1"
-	echo "Sending: $message"
-	echo -ne "$message" > /dev/ttyS1
-}
-
-#read message by tty
-read_pre_message()
-{
-	read -r -d $'\0' ret_msg < /dev/ttyS1
-}
-
-power_off_post_vms() {
-	vm_list=$(acrnctl list)
-	echo $vm_list
-
-	array=($vm_list)
-	num=${#array[@]}
-	echo "Number of VMs: " $num
-
-	if [ $num -gt $MAX_ARRAY ]; then
-		echo "There are no VMs running or acrnctl encountered an internal error."
-		return 0
-	fi
-
-	#shut down post-launched VMs
-	for ((i=0; i<$num; i+=2))
-	do
-		if [ ${array[$i+1]} == $started ]; then
-			echo "Shutting down: " ${array[$i]}
-			acrnctl stop ${array[$i]}
-			sleep 5s
-		fi
-	done
-
-	return 1
-}
-
-check_post_vms_status() {
-	#check post-launched VM status for some time
-	check_times=5
-	while [[ $check_times > 0 ]]
-	do
-		vm_list=$(acrnctl list)
-		array=($vm_list)
-		num=${#array[@]}
-		echo "VM status: " $vm_list
-
-		if [ $num -gt $MAX_ARRAY ]; then
-			sleep 5s
-			let check_times--
-			echo "Check #" $check_times
-			continue;
-		fi
-
-		flag=0
-
-		for ((i=0; i<$num; i+=2))
-		do
-			if [ ${array[$i+1]} != $stopped ]; then
-				flag=1
-				break;
-			fi
-		done
-
-		if [ $flag -eq 1 ]; then
-			sleep 5s
-			let check_times--
-			echo "Check #" $check_times
-		else
-			echo "VM status: " $vm_list
-			break;
-		fi
-
-		if [ $check_times -eq 0 ]; then
-			echo "Timed out waiting for VMs..."
-			break;
-		fi
-	done
-
-	if [ $check_times -gt 0 ]; then
-		return 1;
-	else
-		return 0;
-	fi
-}
-
-check_post_vms_alive() {
-	#check if there is any post-launched VM alive, and return if there is
-	vm_list=$(acrnctl list)
-	array=($vm_list)
-	num=${#array[@]}
-
-	for ((i=0; i<$num; i+=2))
-	do
-		if [ ${array[$i+1]} == $started ]; then
-			echo $vm_list " VM alive!"
-			return 1
-		fi
-	done
-
-	echo "No VM alive: " $vm_list
-	return 0
-}
-
-if [ "$1" = "$SOS" ]; then
-	try_times=2
-
-	#shut down post-launched VMs
-	while [[ $try_times -gt 0 ]]
-	do
-		echo "Checking whether post-launched VMs are alive..."
-		check_post_vms_alive
-		if [ $? -eq 0 ]; then
-			try_times=1
-			break
-		fi
-
-		echo "Powering off VMs..."
-		power_off_post_vms
-		if [ $? -eq 0 ]; then
-			break
-		fi
-
-		echo "Checking the status of post-launched VMs..."
-		check_post_vms_status
-		if [ $? -eq 1 ]; then
-			break
-		fi
-
-		let try_times--
-	done
-
-	if [ $try_times -eq 0 ]; then
-		echo "S5 failed!"
-		exit
-	fi
-
-	echo $(acrnctl list)
-
-	#send shutdown message to the pre-launched VM
-	send_pre_message $SHUTDOWN
-	#read ack message from the pre-launched VM
-	read_pre_message
-	echo "ret_msg: $ret_msg"
-
-	#check the ack message
-	if [ "$ret_msg" = "$ACKED" ]; then
-		echo "Received ACK message"
-	else
-		echo "Could not receive ACK message from the pre-launched User VM"
-		exit
-	fi
-
-	#all pre-launched and post-launched VMs have shut down
-	echo "Shutting down the Service VM itself..."
-	sleep 3s
-	poweroff
-
-elif [ "$1" = "$UOS" ]; then
-	echo "Trying to open socket..."
-	if ! exec 6<>/dev/tcp/$IP_ADDR/$SOCKET_PORT
-	then
-		echo "Failed to open socket"
-		exit 1
-	fi
-	echo "Socket opened"
-
-	#send shutdown message
-	send_message $SHUTDOWN
-	#read ack message
-	read_message
-	echo "ret_msg: $ret_msg"
-
-	#check the ack message
-	if [ "$ret_msg" = "$ACKED" ]; then
-		echo "Received ACK message"
-	else
-		echo "Could not receive ACK message"
-	fi
-else
-	echo "Error! Please use: ./s5_trigger.sh sos  OR ./s5_trigger.sh uos"
-fi
diff --git a/misc/services/life_mngr/s5_trigger_linux.py b/misc/services/life_mngr/s5_trigger_linux.py
new file mode 100644
index 000000000..4a23b492c
--- /dev/null
+++ b/misc/services/life_mngr/s5_trigger_linux.py
@@ -0,0 +1,31 @@
+#!/usr/bin/env python3
+#
+# Copyright (C) 2021 Intel Corporation.
+#
+# SPDX-License-Identifier: BSD-3-Clause
+#
+import socket
+
+class SocketClient:
+    def __init__(self):
+        pass
+    def connect_to_server(self):
+        SOKET_ADDR = '/var/lib/life_mngr/monitor.sock'
+        SHUTDOWN_REQ = 'req_sys_shutdown'
+        BUF_LEN = 1024
+
+        # unix domain sockets
+        server_address = SOKET_ADDR
+        socket_family = socket.AF_UNIX
+        socket_type = socket.SOCK_STREAM
+
+        sock = socket.socket(socket_family, socket_type)
+        sock.connect(server_address)
+        sock.sendall(SHUTDOWN_REQ.encode())
+        data = sock.recv(BUF_LEN)
+        print(f"Waiting for ACK message...: {data.decode()}")
+        sock.close()
+
+if __name__ == "__main__":
+       socket_client_obj = SocketClient()
+       socket_client_obj.connect_to_server()