Re-directing output


 
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# 1  
Old 12-05-2011
Re-directing output

Code:
ps –xyz >/tmp/proc 2>&1

Can anyone explain what does '2' and '&1' will do here?
Thanks to explain

Last edited by Scott; 12-05-2011 at 05:37 AM.. Reason: Code tags
# 2  
Old 12-05-2011
File descriptor 2 is standard error, stderr. File descriptor 1 is standard output, stdout. This will make sure any output sent to stderr is redirected to stdout, which in turn was attached to the file /tmp/proc.

Bash manual on Redirections is a good read on the subject.

Last edited by neutronscott; 12-05-2011 at 05:29 AM.. Reason: grammar
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