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Date: Fri, 14 Oct 2005 14:20:41 +0400
From: Solar Designer <solar@...nwall.com>
To: owl-users@...ts.openwall.com
Subject: Re: PLS need help with new ISO rebuilding
On Thu, Oct 13, 2005 at 04:43:13PM +0400, Melekhov Alexandre A. wrote:
> # cp -a * ../OWL/.
That's the bug. "*" doesn't include filenames starting with a dot. You
should have used "." (current directory) in place of "*" (all non-hidden
files in current directory).
In general, it is a good practice to avoid shell wildcards whenever
possible. As the name suggests, shell wildcards are expanded by the
shell and passed into programs you invoke in an already expanded form.
This results in a significant amount of processing on the filenames. In
particular, in the command above, "cp" had to check each filename for it
possibly being an option to "cp" (that is, something starting with a
dash), -- which was clearly undesired.
--
Alexander Peslyak <solar at openwall.com>
GPG key ID: B35D3598 fp: 6429 0D7E F130 C13E C929 6447 73C3 A290 B35D 3598
http://www.openwall.com - bringing security into open computing environments
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