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From: mwoehlke <mwoehlke AT tibco DOT com>
Subject:  Re: Possible bug in pgrep (procps)
Date:  Mon, 17 Jul 2006 17:48:58 -0500
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Bengt-Arne Fjellner wrote:
> pgrep from procps-3.2.6-1 when asking for an exact match with arguments seems to
> demand an extra space after the argument.
> See the following sequence.
> 
> No space after the f on the commandline
> $ emacs f&
> [1] 2072
> 
> without extra space
> $ pgrep  -x -f "emacs f"
> 
> with extra space after f
> $ pgrep  -x -f "emacs f "
> 2072
> 
> Bug or my misunderstanding ?

Sure sounds like a bug, unless 'grep "foo"' is no longer supposed to 
match the line "foo "... 'man pgrep' isn't very specific on how the 
pattern matching is supposed to work, so I would assume partial matches 
are expected to work (as they would in grep).

Interestingly enough, on my computer (cygwin 1-5-19.4, procps 3.2.6-1), 
I see the following:

$ sleep 1h&
[1] 2136
$ pgrep -f 'sleep 1h'
2136
$ pgrep -f 'sleep 1h '
2136
$ pgrep -f 'sleep 1h  '
$

(Same results using ""s instead of ''s.)
This also seems wrong; 'sleep 1h ' should not have matched anything IMO. 
It does seem like there is something fishy going on.

-- 
Matthew
Interix, Sphinterix. Cygwin apps don't crash. :-)


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