Shell redirection cheatsheet.

README.md

Shell redirection cheatsheet

• Examples
  • stdout to file
  • stderr to file
  • stdout to stderr
  • stderr to stdout
  • stdout and stderr to file
• Reference

Examples

stdout to file

$ /bin/exec >/path/to/file.out

stderr to file

$ /bin/exec 2>/path/to/file.out

stdout to stderr

$ /bin/exec 1>&2

# or in most instances...

$ /bin/exec >&2
$ echo "Error: You did bad!" >&2

stderr to stdout

$ /bin/exec 2>&1

stdout and stderr to file

$ /bin/exec &>/path/to/file.out

# as an alternative
$ /bin/exec >/path/to/file.out 2>&1

Reference

• http://tldp.org/HOWTO/Bash-Prog-Intro-HOWTO-3.html