The pipe '|' (usually shift-backtab on the keyboard) allows
you to pass the output of one Unix command into another. E.g.
ls | more
You can pipe the output of one command as the arguments of another
command using xargs:
ps | grep 'emacs' | cut -d' ' -f2 | xargs kill
This finds jobs involving emacs and kills them.
Last modified: 12/14/08.