pidof -s doesn't work

[Gregory Nowak]

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Hi all.

I've got /bin/pidof softlinked to /bin/killall, according to the
pidof(8) man page. The pidof(8) man page says:

"-s     Single shot - this instructs the program to only return one
pid."

Since running pidof with the name of a particular process returns
multiple pids for that process, I need to use the -s flag, since the
bash script I'm running pidof in needs to have a single pid returned,
and does not expect to see multiple pids. This expectation is safe,
since all I want to do is to check if an instance of that process is
running at all.

So, I do:

pidof -s process_name

, and I get back:

"process_name: unknown signal; killall -l lists signals."

Does anyone know how else I can get pidof to return a single pid?
Thanks in advance.

Greg


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