Hacker Read

falcolas | karma 33589 | avg karma 3.15 · 2018-01-06 16:10:28

It's !:h - not just a plain :h

    $ echo foo /bar
    foo /bar

    $ !:h
    echo foo
    foo

It's under `man bash` in the History Expansion section.

pimlottc | karma 7866 | avg karma 3.44 · 2018-01-06 18:58:22

That's not quite what the author was talking about; your example does the same thing as !:0-

This is what the author meant:

  $ echo foo/bar
  foo/bar

  $ !:h
  echo foo
  foo