From: Peter Stephenson <pws@csr.com>
To: "zsh-users@sunsite.dk" <zsh-users@sunsite.dk>
Subject: Re: Testing for broken symlinks
Date: Wed, 20 Apr 2005 10:15:37 +0100 [thread overview]
Message-ID: <200504200915.j3K9Fbsi018162@news01.csr.com> (raw)
In-Reply-To: <opspishpc86k1y1x@aspen>
"Eric Mangold" wrote:
> Is there any way to test if a symlink is broken?
This will work:
broken=(mylinktest(N-@))
if (( ${#broken} )); then
print mylinktest is a broken symbolic link
else
print mylinktest is not a symbolic link or is not broken
fi
The basic point is that the command line argument mylinktest(N-@) is
removed unless mylinktest is a broken symbolic link, so you may have a
more efficient way to use the fact.
This works because - makes the shell follow symbolic links, while @
tells it to look only for symbolic links. The only files that are
still resolved as symbolic links are those that are broken. The N flag
then removes any failed glob, i.e. those not broken symbolic links.
--
Peter Stephenson <pws@csr.com> Software Engineer
CSR PLC, Churchill House, Cambridge Business Park, Cowley Road
Cambridge, CB4 0WZ, UK Tel: +44 (0)1223 692070
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next prev parent reply other threads:[~2005-04-20 9:16 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-04-20 7:30 Eric Mangold
2005-04-20 9:15 ` Peter Stephenson [this message]
2005-04-20 17:20 ` Paul Lew
2005-04-21 7:02 ` Bart Schaefer
2005-04-20 10:51 ` Alexey Tourbin
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