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+# 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}}`