from the desk of stinkpot

redirect stdout and stderr in a shell script

February 14th, 2008 by Lawrence David

to  send the standard output and standard error streams from your shell script somewhere, place the following at the top of your script:

#!/bin/bash

exec &>  output.file;

[the rest of your code]

Posted in Shell Scripting | 1 Comment »

if that was helpful ...

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One Response to “redirect stdout and stderr in a shell script”

1. on 15 Mar 2009 at 8:24 pm   Camille

   Something very helpful is to redirect stderr in stdin,
   so you can pipe to grep or whatever:

   zsh$ cat /foo 2>&1 | grep ‘No such file’
   cat: /foo: No such file or directory

   If you want to keep only stderr you can do :

   zsh$ cat /foo 2>&1 1> /dev/null | grep ‘No such file’
   cat: /foo: No such file or directory