Redirection

General

0 = stdin
1 = stdout
2 = stderr
Each of these can be redirected independently
To redirect stderr, preface the > with the number of the file descriptor to redirect> This is often used to discard error info from appearing on the screen
- since stderr is on file descriptor 2, use 2>
Redirect stdout and stderr to different files
- kill iHUP 1234 >killout.txt 2>killerr.txt
- I am guessing that 1 is the default so you don't see 1>
Redirect stdout and stderr to the same file
- kill -1 1234 >blah.txt 2>&1
  - Read it like this: redirect stdout to the file blah.txt, then direct stderr to the same place as stdout
Redirect all output, stdout and stderr, to /dev/null
- kill -1 1234 >/dev/null 2>&1
Redirecting input is kind of lame
- more < blah.txt
  - why not just do more blah.txt