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 !!
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Run a command with the last argument of the previous command

$ [command] !$
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Run a command with the first argument of the previous command

$ [command] !^
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Run the Nth command of the history

$ ![n]
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Run the command n lines back in the history

$ !-[n]
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Run the most recent command containing string

$ !?[string]?
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Run the previous command, replacing string1 with string2

$ ^[string1]^[string2]^
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Perform a history expansion, but print the command that would be run instead of actually running it

$ [!-n]:p
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realt