Bill Jonas wrote:
> On Thu, Oct 14, 2004 at 08:59:02AM -0700, Josef Lowder wrote:
> 
>>Is there an efficient syntax to string commands so I could do a 'diff' 
>>on these two listings (without listing each to a file to compare files) 
>>to see what the two additional files are? 
> 
> 
> With bash and some others:
> 
> diff <(ls -a ~) <(ls -A ~)
> 
> The <() syntax is called "command substitution".  It basically gives a
> filehandle on the output of the command you have inside.  You can think
> of it as similar to a pipe, except it's for commands that don't accept
> data on their standard input.  For fun, you can try "file -s <(df -h)"
> (or any other command instead of df) and note the results.  (Results may
> differ on different distributions, but "fd" is short for "file
> descriptor".)
> 
Thanks for that one, Bill. Slick!
Guess I should read "man bash" one of these days.
Learn somethin' new every day.
-- 
-Eric 'shubes'
"There is no such thing as the People;
  it is a collectivist myth.
  There are only individual citizens
  with individual wills
  and individual purposes."
-William E. Simon (1927-2000),
     Secretary of the Treasury (1974-1977)
  "A Time For Truth" (1978), pg. 237

****************************************************
This message has been scanned using Contraxx
Technology Group mail server v2.3 and is virus free.
****************************************************
---------------------------------------------------
PLUG-discuss mailing list - PLUG-discuss@lists.plug.phoenix.az.us
To subscribe, unsubscribe, or to change  you mail settings:
http://lists.PLUG.phoenix.az.us/mailman/listinfo/plug-discuss