Comments on: 8 Mysterious Uses of (!) Operator in Linux Commands

By: sedlav

sedlav — Fri, 14 May 2021 14:05:53 +0000

If you are using BASH in order to expose the use of !, then you must, at least, clarify that BASH is part of the GNU project not of Linux Kernel, please don't spread misconception.

By: Amit Kumar Tripathi

Amit Kumar Tripathi — Tue, 12 Jun 2018 10:37:26 +0000

Simply Awesome

By: Avishek Kumar

Avishek Kumar — Wed, 20 May 2015 05:57:20 +0000

In reply to Stephen.

Dear Stephen,
Thanks for the wonderful piece of Information. Keep connected and keep us aware of such context.

By: Avishek Kumar

Avishek Kumar — Wed, 20 May 2015 05:55:54 +0000

In reply to Edgar Allen.

Dear Edgar,
Your Suggestion is taken into account.
Thanks for your feedback.

By: Edgar Allen

Edgar Allen — Tue, 19 May 2015 17:00:06 +0000

You might also mention !?

It finds the last command with its’ string argument. For example, if…
1013 grep tornado /usr/share/dict/words
1014 grep hurricane /usr/share/dict/words
1015 wc -l /usr/share/dict/words

are all in the history then !?torn will grep for tornado again where !torn would search in vain for a command starting with torn.

And `wc !?torn?:2` works to select argument two from the command containing tornado and run `wc` on it.