Bash auto-complete

There are a ton of extended auto-completions that come with Ubuntu, but they are disabled by default.

Have a look in the /etc/bash_completion.d/ directory for the programs that have specific auto-completes (such as apt-get, git, apache2ctl, etc.).

To get all the extra auto-completion-goodness, all you have to do is source /etc/bash_completion in your profile.

I added this is my .bashrc, but there may already be a commented out block for this in the stock .bashrc file for ubuntu:

# Enable bash completion in interactive shells
if [ -f /etc/bash_completion ] && ! shopt -oq posix; then
    . /etc/bash_completion
fi