Reverse search your bash history

You know in your shell how you can hit the up arrow and cycle back through your old submitted commands? You can also get a list of your shell history using the history command, like so:

$ history
1  gs
..snip a bunch of lines..
814  heroku ps
815  heroku ps:scale worker=1
816  gs
817  history

Combine that with grep to search for past commands:

history | grep heroku

Or you can just hit CTRL-r and start typing to search and then hit Return to run the intended command: