``` #!/bin/bash # ------------------------------------------------------------------------- # Copyright (c) 2003 nixCraft project # This script is licensed under GNU GPL version 2.0 or above # ------------------------------------------------------------------------- # This script is part of nixCraft shell script http://en.wikipedia.org/wiki/Shell_script collection (NSSC) # Visit http://bash.cyberciti.biz/ for more information. # Copyright (c) 2010 CyberOrg Info. Modification to watch any process/service # ------------------------------------------------------------------------- RESTART="/etc/init.d/sshd restart" PGREP="/usr/bin/pgrep" processtowatch="sshd" x=1 while [ $x = 1 ]; do # find pid $PGREP ${processtowatch} if [ $? -ne 0 ] then echo "`date` : $processtowatch went down, restarting" >> /var/log/restart.log $RESTART fi sleep 30 done ```