source: http://www.skorks.com/2009/09/bash-shortcuts-for-maximum-productivity/

## Command Editing Shortcuts

* Ctrl + a – go to the start of the command line
* Ctrl + e – go to the end of the command line
* Ctrl + k – delete from cursor to the end of the command line
* Ctrl + u – delete from cursor to the start of the command line
* Ctrl + w – delete from cursor to start of word (i.e. delete backwards one word)
* Ctrl + y – paste word or text that was cut using one of the deletion shortcuts (such as the one above) after the cursor
* Ctrl + xx – move between start of command line and current cursor position (and back again)
* Alt + b – move backward one word (or go to start of word the cursor is currently on)
* Alt + f – move forward one word (or go to end of word the cursor is currently on)
* Alt + d – delete to end of word starting at cursor (whole word if cursor is at the beginning of word)
* Alt + c – capitalize to end of word starting at cursor (whole word if cursor is at the beginning of word)
* Alt + u – make uppercase from cursor to end of word
* Alt + l – make lowercase from cursor to end of word
* Alt + t – swap current word with previous
* Ctrl + f – move forward one character
* Ctrl + b – move backward one character
* Ctrl + d – delete character under the cursor
* Ctrl + h – delete character before the cursor
* Ctrl + t – swap character under cursor with the previous one

## Command Recall Shortcuts

* Ctrl + r – search the history backwards
* Ctrl + g – escape from history searching mode
* Ctrl + p – previous command in history (i.e. walk back through the command history)
* Ctrl + n – next command in history (i.e. walk forward through the command history)
* Alt + . – use the last word of the previous command

## Command Control Shortcuts

* Ctrl + l – clear the screen
* Ctrl + s – stops the output to the screen (for long running verbose command)
* Ctrl + q – allow output to the screen (if previously stopped using command above)
* Ctrl + c – terminate the command
* Ctrl + z – suspend/stop the command

## Bash Bang (!) Commands

Bash also has some handy features that use the ! (bang) to allow you to do some funky stuff with bash commands.

* !! - run last command
* !blah – run the most recent command that starts with ‘blah’ (e.g. !ls)
* !blah:p – print out the command that !blah would run (also adds it as the latest command in the command history)
* !$ – the last word of the previous command (same as Alt + .)
* !$:p – print out the word that !$ would substitute
* !* – the previous command except for the last word (e.g. if you type ‘find some_file.txt /‘, then !* would give you ‘find some_file.txt‘)
* !*:p – print out what !* would substitute

There is one more handy thing you can do. This involves using the ^^ ‘command’. If you type a command and run it, you can re-run the same command but substitute a piece of text for another piece of text using ^^ e.g.: