How to redirect stderr in Unix

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How to redirect stderr in Unix

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Question:

I forgot how to redirect stderr in Unix.

Answer:

> will redirect stdout. Use the >& operator to redirect stderr:

rm backup.zip >&junk

It works in the Windows shell too.

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Comments:

2008-03-12, 15:16:36

anonymous from United States

Actually its neither of the above.
1 = std out file descriptor
2 = std err file descriptor

so the following redirects stderr to a file named 'junk'

rm backup.zip 2>junk

and the following redirects both stdout and stderr into a file named junk

rm backup.zip 1>junk 2>&1

the >& says to use the same file used by '1'

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