Korn Shell - Shell Programming and Scripting

gpanesar · #1 (**permalink**) 03-25-2005

Hi I am new to shell programming. I need help to write a script to monitor a process on Sun OS. If the process fails then call a oracle procedure.

i check the process if running by typing

Code:

ps -ef | grep ESP | grep -v grep
    root 29002     1  0   Mar 18 ?        7:20 /u01p/system/ESPSystemAgent/cybAgent

thanks

vgersh99 · #2 (**permalink**) 03-25-2005

Code:

#!/bin/ksh

if (( $(ps -ef | grep -c [E]SP) > 0 )) ; then
   echo 'ESP is running'
else
   echo 'ESP is NOT running'
fi

gpanesar · #3 (**permalink**) 03-25-2005

How would keep this job running all the time. will the job end if the grep process is not found

or i can i run it in the backround and leave the process on machine?

vgersh99 · #4 (**permalink**) 03-25-2005

Quote:

Originally Posted by gpanesar

How would keep this job running all the time. will the job end if the grep process is not found

the script will exit either way. This was intended as a hint at the implementation - not a complete solution.

If you want to keep cheking for the job/process, you'll either:

'cron' [man crontab] the script to be ran at predefined times
write the infinite look around the 'if' with the 'sleep #Seconds' to suspend the exucution for a '# of Seconds'

Quote:

Originally Posted by gpanesar

or i can i run it in the backround and leave the process on machine?

gpanesar · #5 (**permalink**) 03-25-2005

thanks for the help

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