Re: [Bug-tar] tar (GNU tar) 1.15.1 bugreport: tar -C <dir> doesn't support fileglobbing

[Helmut Waitzmann]

Ralph Corderoy <address@hidden> writes:

>Another alternative is
>
>    cd /not/backup
>    tar -C /backup -cf /backup/tmp.tar $(cd /backup && ls tmp-*.txt)
>
>The shell first runs 'cd /backup && ls tmp-*.txt' and replaces the
>$(...) with the command's output.  It then runs tar.

No.  It's not an alternative:  If the filenames which are reported by
"ls" contain white space, the shell will split those filenames into
words.  For an example try the following commands:

touch -- /backup/'tmp-filenames with white space break this command.txt'
cd /not/backup
tar -C /backup -cf /backup/tmp.tar $(cd /backup && ls tmp-*.txt)

So dont't ever do "$(ls ...)".  It may fail.
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