Cheat sheet showing shell redirection behavior <stdout / stderr bash

Question

Is there a good cheat sheet demonstrating the many uses of BASH shell redirection? I would like to convey such things to my students. Some examples that I would like to consider:

cmd > output_file.txt #redirect stdout to output_file.txt cmd 2> output_file.txt #redirect stderr to output_file.txt cmd >& outpout_file.txt #redirect both stderr and stdout to output_file.txt cmd1 | cmd2 #pipe cmd1 stdout to cmd2 stdin cmd1 2>&1 | cmd2 #pipe cmd1 stdout and stderr to cmd2 stdin cmd1 | tee result.txt #print cmd1 stdout to screen and also write to result.txt cmd1 2>&1 | tee result.txt #print stdout,stderr to screen while writing to result.txt 

(or we could just do this community wiki and list such things here)

Thanks!

Setjmp

Answer 1

http://wiki.linuxquestions.org/wiki/Bash-operators

Answer 2

Peteris Krumins also has a rather extensive deceiver: http://www.catonmat.net/blog/bash-redirections-cheat-sheet/

Answer 3

You can also watch the Advanced Bash Guide

Answer 4

http://tldp.org/LDP/abs/html/process-sub.html

Your students may appreciate a little substitution process. It is very closely related to IO redirection.

Edit: it looks like Dennis Williamson's link is already talking about an approach to the process :)