Filippo Giunchedi wrote:
> I'm using md5sum in a shell script and I need to know wheter md5sum has
> failed because a file can't be read or md5sum mismatch. However md5sum
> exits always 1 regardless of the error. It would be useful to
> differentiate, e.g:
>
> 1 - md5sum mismatch
> 2 - ENOENT
> 3 - ...
Remembering that there are various different md5sum implementations on
different systems (even on Debian!) it would be better to code this
explicitly in your script. Perhaps something like this?
MD5SUMFILE=somefile
if [ ! -f $MD5SUMFILE ]; then
echo Could not open $MD5SUMFILE 1>&2
exit 1
fi
if ! md5sum -c $MD5SUMFILE; then
echo Failed md5sum check with $MD5SUMFILE 1>&2
exit 1
fi
exit 0
The above would work with the differerent md5sum implementations on
different systems.
Bob
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