[Tutor] pipes, lots of 'em

[D-Man]

On Tue, Mar 13, 2001 at 11:35:24PM -0800, Sean 'Shaleh' Perry wrote:
| On Tue, Mar 13, 2001 at 10:39:44PM -0800, Daniel Yoo wrote:
| 
| ar p foo.ar bar|tar xfO - baz
| 
| is the basic command line I need.  This get bar out of the ar formatted foo.ar
| and sends it to tar which extracts baz.  I want to be able to parse baz
| without it getting written to disk.  

I think the problem here is the command line.  Can you request tar to
output on stdout, rather than writing to disk?  I know that you can
for the tarfile itself with the "f -" options.  I just briefly looked
at the tar manpage but didn't find any obvious examples.  Perhaps a
closer look at the manpage would help.

Alternatively, maybe you can dig into tar's sources a little and find
the functions that do the actual work.  Maybe you can turn it into a
library without too much trouble?

-D