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history expansion

Reuse and expand the shell history in `sh`, `bash`, `zsh`, `rbash` and `ksh`.

More information.

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

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