Subject: Re: sh reads byte by byte
To: Manuel Bouyer <firstname.lastname@example.org>
From: Greg A. Woods <email@example.com>
Date: 02/21/2007 18:24:57
At Sat, 20 Jan 2007 17:01:08 +0100,
Manuel Bouyer wrote:
> while trying to see how to speedup audit-packages as used by the bulk builds,
> I noticed (using ktrace) that something like this:
> while read a b c; do
> echo $a $b $c
> done < /tmp/file
> will read /tmp/file byte by byte. With the current pkg-vulnerabilities
> this makes 221909 syscalls. Would there be a way to have it read the
> file in a more efficient way (rewriting it in another language is not an
> option for now) ?
Why not rewrite? That would seem to be the correct solution. Can't
AWK, for example, do the job?
If you're talking specifically about the "while read pat type url; do"
loop in audit-packages, then that would indeed seem to be an ideal
application for AWK.
Greg A. Woods
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