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Message-ID: <43204FFF.74CDAC16@dessent.net>
Date: Thu, 08 Sep 2005 07:51:43 -0700
From: Brian Dessent <brian AT dessent DOT net>
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To: cygwin AT cygwin DOT com
Subject: Re: xargs still nok?
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zzapper wrote:

> Is Xargs still reqd for
> 
> find . -name '*.cfm' -exec grep -i {} \;

It's not required, but using the above you will have to fork() and
exec() an individual copy of grep for each file, which will be
horrendously slow.   If you used xargs, it will call grep with as many
filenames as will fit on one command line, so that grep is actually
invoked as few times as is absolutely necessary.

It's the difference between:

grep -i foo bar00001.c
grep -i foo bar00002.c
...
grep -i foo bar00099.c # grep invoked 100 times

versus

grep -i foo bar00001.c bar00002.c ... bar00050.c
grep -i foo bar00051.c bar00052.c ... bar00099.c # grep invoked twice

Brian

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