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Article #1433Re: How to pipe stderr to a command in Bourne or Korn shell
From: Dan Bernstein
Date: Tue, 09 Oct 1990 03:10
Date: Tue, 09 Oct 1990 03:10
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1459 bytes
In article <1990Oct8.204053.15797@athena.mit.edu> jik@athena.mit.edu (Jonathan I. Kamens) writes: > In csh, one possible way to do it (when working at a tty) would be: But who said there's a tty around? What if Pim wanted to pipe his output through yet another command? > A similar approach will work in sh (and probably ksh), although there's > probably some better way to do it with various hideous file descriptor > reassignments (I don't use the bourne shell a lot, so I don't qualify to > invent hideous file descriptor reassignments :-): I use the bourne shell a lot, so I guess I qualify. It isn't too hideous, though, if you write it clearly: ( exec 5>&1; exec 1>&2; exec 2>&5; foo ) | err-processor Even you :-) should be able to recognize the swap idiom there. Start from basic constructs like this and soon you'll be piping stdout and stderr through separate commands. Someday you may even learn to use multitee... [grin] ---Dan
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!rutgers!cs.utexas.edu!yale!cmcl2!kramden.acf.nyu.edu!brnstnd From: brnstnd@kramden.acf.nyu.edu (Dan Bernstein) Newsgroups: comp.unix.shell Subject: Re: How to pipe stderr to a command in Bourne or Korn shell Message-ID: <5069:Oct903:10:1390@kramden.acf.nyu.edu> Date: 9 Oct 90 03:10:13 GMT References: <1990Oct8.165133.17187@cti-software.nl> <6133@ge-dab.GE.COM> <1990Oct8.204053.15797@athena.mit.edu> Organization: IR Lines: 22