How do I redirect stdout and stderr to a file?

Environment

• Red Hat Enterprise Linux 3
• Red Hat Enterprise Linux 4
• Red Hat Enterprise Linux 5

Issue

How do I redirect stdout and stderr to a file?

Resolution

You can redirect stdout and stderr several different ways. Below you will find several scenarios that show you how to execute the specified task from the command line with examples of each:

To redirect stdout to a file:

 <command> > <filename>
 ls -l > ls-l.txt

To redirect stderr to file:

 <command> 2> <filename>
 grep da * 2> grep-errors.txt

To redirect stdout to stderr:

 <command> 1>&2
 grep da * 1>&2

To redirect stderr to stdout:

 <command> 2>&1
 grep * 2>&1

To redirect stderr and stdout to file:

 <command> &> <filename>
 rm -f $(find / -name core) &> /dev/null

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