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07-03-2002
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identify parent process in ps?
I need to write a script to monitor user processes that revert to parent process id = 1
I can do this with a grep " 1 " or awk and evaluation. but Is there a switch on the ps command or another command to specify parent id on proccesses? I tried ps with the -p ppid=nnnnn but it doesnt seem to work. thanks |
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07-03-2002
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On the most unix flavours the -f(ull) option will show the PPID
like /logs: ps -f UID PID PPID C STIME TTY TIME CMD net400 24032 24268 2 17:02:15 pts/0 0:00 ps -f net400 24268 13026 0 16:37:04 pts/0 0:00 -csh /logs: |
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07-03-2002
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Yes. but I want to monitor processes that have PPID = 1
I want to know if there is a switch to identify PPID specific For example: ps -ef -p 29538 will give me process id 29538 I dont see a switch in the man pages for ppid |
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07-03-2002
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07-03-2002
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No. thats a lot of info. but doesnt give me an answer.
I am looking for an alternative to this: for PID in `ps -ef |grep -v root| grep " 1 " | awk '{print $2}'` The grep " 1" is giving me all processes running under PPID = 1. I could also awk'{print $3}' and evaluate it for a value of 1 I found in the man pages a switch -p to identify proccesses for a PID. I am wondering if maybe there is a switch for PPID that I'm missing when I look up the use of ps. |
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07-03-2002
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For a list of pid's that are not owned by root but have a ppid of 1, I would go with:
Code:
#! /usr/bin/ksh
ps -ef | sed 1d | while read user pid ppid junk ; do
if [[ $user != root && $ppid = 1 ]] ; then
echo $pid
fi
done
exit 0
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