CentOS - Sep 2005 - tar with pipe

CentOS 4.1 X86_64

I am trying to collect all my music files and extract them into a new 
directory flat, (without the hierarchy)

The command works find without the pipe, but do not work with.

1.Why don't the command work after the pipe?
2.How do I remove the hierarchy before extracting?

$ tar -cvf music.tar `find ../ -name '*.mp3' -o -name '*.ogg'` |
tar
-xvf music.tar

On Sun, 25 Sep 2005 at 5:56pm, Kai wrote
> CentOS 4.1 X86_64
>
> I am trying to collect all my music files and extract them into a new 
> directory flat, (without the hierarchy)
>
> The command works find without the pipe, but do not work with.
>
> 1.Why don't the command work after the pipe?
> 2.How do I remove the hierarchy before extracting?
>
> $ tar -cvf music.tar `find ../ -name '*.mp3' -o -name
'*.ogg'` | tar -xvf
> music.tar
Pipes direct the next command to read from stdin, but the '-f' flag to 
'tar c' send its output to the named file, not stdout.  A better form of
the above command would be:

tar cvO `find ../ -name '*.mp3' -o -name '*.ogg'` | tar xf -

The 'O' in the first tar sends its output to stdout, and the 'f
-' in the
2nd tells tar to read from stdin.

*However*, that will keep the directory structure.  Why not just use cp?

find ../ -name '*.mp3' -o -name '*.ogg' -print0 | xargs -0 -i cp
\{} .

-- 
Joshua Baker-LePain
Department of Biomedical Engineering
Duke University