Script to shutdown all Linux machines in network

Use the below shell script to shutdown all Linux systems in LAN.

This shell script will be useful for system admins.


#!/bin/sh
read -p "Do you want to shutdown all systems? (y/n)" OUT
if [ "$OUT" = "y" ] || [ "$OUT" = "Y" ]; then
sys_ip="11 12 13"
for i in $sys_ip; do
if ping -c 1 "192.168.2.$i">/dev/null 2>&1; then
ssh root@192.168.2.$i init 0
else
echo "192.168.2.$i system is already down"
fi
done
elif [ "$OUT" = "n" ] || [ "$OUT" = "N" ]; then
 echo "Okay. No problem. You can shutdown it later."
else
 echo "You have entered wrong character. Enter only y or n."
fi