Shell Programming and Scripting

if ps faux | grep -v grep | grep ProcessXYZ 

then

      echo "$SERVICE is running, , everything is fine"
exit 0

    else
          echo "$SERVICE is not running"
             exit 2
fi

#!/usr/bin/perl
if ps faux | grep -v grep | grep ProcessXYZ {
print "OK\n";
exit (0);
}

else {
print "CRITICAL\n";
exit (2);
}

#!/usr/bin/perl
$result = `ps faux | grep -v grep | grep 'ProcessXYZ'`;

##if you want to see the error level, uncomment the below.
#print "Error Level: " .$? ."\n";

if ( $? == 0 )
{
        print "OK\n";
        exit (0);
}
else
{
        print "CRITICAL\n";
        exit (2);
}