Quite a few of the tips that get submitted on shell-fu.org aren’t that useful if you need to remember them, but are just the thing to put in your bashrc as aliases or functions.
reptyr is a utility for taking an existing running program and attaching it to a new terminal. Started a long-running process over ssh, but have to leave and don’t want to interrupt it? Just start a screen, use reptyr to grab it, and then kill the ssh ses
.bash_profile, .profile, & .bashrc Conventions
Allows you to pipe your bash input to twitter or identi.ca in an easy and fast manner to annoy the whole world.
or did you know ~<tab><tab> - All Present Users on system from "/etc/passwd"