GREP question 1

[alan147]

Good morning

I am writing a script to check that various applications are running. One application needs three component processes to be running can I use grep to check that all three are running and use the exit status to indicate success or failure?

Using grep -e proc1 | proc2 | proc3 will only show if at least one process is running.

Any ideas?

Thanks

Alan

 

[KenCunningham]

Alan, perhaps put the grep in a loop and write the exit status of each iteration to an incrementing variable. If your variable is > 0 at the end, you know one or more of the processes is having a problem. You could probably refine this to identify which, if necessary.

I don't mind people who aren't what they seem. I just wish they'd make their mind up.

 

[PHV]

Something like this ?
[ `ps -e | grep -cE 'proc1|proc2|proc3'` -eq 3 ] && echo OK

Hope This Helps, PH.
Want to get great answers to your Tek-Tips questions? Have a look at FAQ219-2884 or FAQ181-2886

 

[alan147]

Thanks for your help

Alan