[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: input/output redirection with tar
From: |
Bob Proulx |
Subject: |
Re: input/output redirection with tar |
Date: |
Thu, 20 Oct 2011 18:18:04 -0600 |
User-agent: |
Mutt/1.5.21 (2010-09-15) |
e-letter wrote:
> Eric Blake wrote:
> > Common convention among many unix tools is to treat '-' as a synonym for
> > stdin. I don't know if 'info tar' explicitly calls this out, though
> > that would be a question for bug-tar.
>
> Couldn't find explanation in 'man tar' and after a few years, have yet
> to master navigation within 'info' documents! However, thanks again
> anyway. :)
The Unix man pages do. See the -f option here for one example.
http://www.freebsd.org/cgi/man.cgi?query=tar&apropos=0&sektion=0&manpath=FreeBSD+8.2-RELEASE&arch=default&format=html
tar has had a long history using - for stdin and stdout.
The tar info pages say:
http://www.gnu.org/software/tar/manual/html_node/files.html#SEC106
If you give a single dash as a file name for `--files-from', (i.e.,
you specify either `--files-from=-' or `-T -'), then the file names
are read from standard input.
Bob