Shell redirections

[brandon at tdi2.UUCP]

Quoted from <4628 at brl-adm.ARPA> ["Re: INFO-UNIX Digest  V3#073"], by black at ee.UCLA.EDU (Rex Black)...
+---------------
| > 	(cmd 2>&1) | tee log
| > 	(exec cmd 2>&1) | tee log
| > 	Well is there some other syntax or funny combination of >|12& to use ?
| 
| 	You betcha!  Try
| 	script |& pipeprog
| 	or
| 	script >& logfile
| 
| 	Works for me.
+---------------

No doubt.  However, you'll note the ``2>&1'' he used.  Believe it or not, he's
running the old-fashioned Bourne shell.  And if he is running System V, he
hasn't got much of a choice about it (barring spending mucho $$$ on the Korn
shell, which he said he's already doing; the Korn shell does this the same way
the Bourne shell does).

PLEASE REMEMBER THAT NOT EVERYONE IS RUNNING THE C SHELL UNDER 4.3BSD ON A
VAX!!!!!!!

NB:  The way to do it is `(exec 2>&1; exec cmd) | tee log'.  This works even
for builtins, and even on pre-System V Bourne shells.

++Brandon
-- 
``for is he not of the Children of Luthien?  Never shall that line fail, though
the years may lengthen beyond count.''  --J. R. R. Tolkien

Brandon S. Allbery	           UUCP: cbatt!cwruecmp!ncoast!tdi2!brandon
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