Date: Tue, 13 Dec 2005 17:57:18 +0300 From: Sergey Zaharchenko <doublef-ctm@yandex.ru> To: Eric Schuele <e.schuele@computer.org> Cc: FreeBSD Questions <freebsd-questions@freebsd.org> Subject: Re: grep'ping the ps output.... Message-ID: <20051213145718.GB30661@shark.localdomain> In-Reply-To: <439D9FA3.7030603@computer.org> References: <439D9FA3.7030603@computer.org>
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Hello Eric!
Mon, Dec 12, 2005 at 10:04:51AM -0600 you wrote:
> I was wondering if someone could explain why it is sometimes there and=20
> not other times.
Sometimes the ps process manages to catch the system state when grep has
not been started yet by the shell. Sometimes it doesn't.
> And how I should correctly go about detecting if the=20
> process is running before I perform my action.
You may use the -c flag of ps:
-c Change the ``command'' column output to just contain the exe-
cutable name, rather than the full command line.
Like:
df@shark:~> ps axc |grep init
1 ?? ILs 0:00,00 init
--=20
DoubleF
No virus detected in this message. Ehrm, wait a minute...
/kernel: pid 56921 (antivirus), uid 32000: exited on signal 9
Oh yes, no virus:)
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