Shell Programming and Scripting

ps -ef | grep abc | grep -v grep
[ $?  -eq "0" ] && echo "process is running" || echo "process is not running"

#!/bin/sh
#
SERVICE=service
 
ps -ef |grep $service

if [[ -z $(ps -ef |grep ${my_string}) ]]
then 
   print "help!\n"
else
   print "all's good...\n"
fi

#!/bin/sh
SERVICE=service;

if ps ax | grep -v grep | grep $SERVICE > /dev/null
then
    echo "$SERVICE service running, everything is fine"
else
    echo "$SERVICE is not running"
    echo "$SERVICE is not running!" | mail -s "$SERVICE down" root
fi

#!/bin/bash
SERVICE=service
if P=$(pgrep $SERVICE)
then
    echo "$SERVICE is running, PID is $P"
else
    echo "$SERVICE is not running"
fi