# Caret

> Bash builtin to quick substitute a string in the previous command and run the result.
> Equivalent to `!!:s^string1^string2`.
> More information: <https://www.gnu.org/software/bash/manual/bash.html#Event-Designators>.

- Run the previous command replacing `string1` with `string2`:

`^{{string1}}^{{string2}}`

- Remove `string1` from the previous command:

`^{{string1}}^`

- Replace `string1` with `string2` in the previous command and add `string3` to its end:

`^{{string1}}^{{string2}}^{{string3}}`