Recently I came across the command Ctrl-R in the bash shell. It allows you to search and browse your bash history.
For instance you ssh into your server every day, in between each ssh you do a bunch of other things, this makes in impractical to use the Up arrow key to go through your history to find the command. Instead hit
Ctrl-R, and start typing ss, it will search your bash history for the last time you used a command with ss in it:
(reverse-i-search)`ss': ssh foo.servername.com
You hit 'Enter' and the line will be executed.