histexpand
Reuse and expand the shell history in `sh`, `bash`, `zsh`, `rbash` and `ksh`.
TLDR
Run the previous command as root (!! is replaced by the previous command)
$ sudo !!
Run a command with the last argument of the previous command
$ [command] !$
Run a command with the first argument of the previous command
$ [command] !^
Run the Nth command of the history
$ ![n]
Run the command n lines back in the history
$ !-[n]
Run the most recent command containing string
$ !?[string]?
Run the previous command, replacing string1 with string2
$ ^[string1]^[string2]^
Perform a history expansion, but print the command that would be run instead of actually running it
$ [!-n]:p
