How to undo malicious changes to key bindings?

Question

My friend used this script (do not run this!!) to change all my keys to h. How can I undo this?

Start a new shell. If he had put this code into one of your startup files, use a text editor to remove it first. Also, be more careful in the future how you select your friends. — user1934428, Commented Dec 1, 2022 at 10:06
@user1934428 The script (or, to be correct, the script which the linked script downloads and executes) changes the keybindings for the current user. Opening a new shell will not help. — nohillside, Commented Dec 1, 2022 at 10:57
@nohillside : Not a subshell of course (this would not be possible anyway), but a completely new shell tab. I don't see how the local key binding change in one zsh process could possibly influence the keybinding in a completely unrelated zsh process, unless the remapping of the key is done on the OS-level (in which even a text editor would not work). — user1934428, Commented Dec 1, 2022 at 11:02
@user1934428 hidutil (which is what the scripts use) changes the keybindings for the current user, not for the current shell. If you want to check yourself: download the script and edit it to replace eval with echo. Run it to see the URL for the second script and download this as well. Do the eval/echo replacement on the second script as well and run it. — nohillside, Commented Dec 1, 2022 at 11:56

nohillside · Accepted Answer · 2022-11-30 22:15:21Z

2

hidutil property --set '{"UserKeyMapping":[]}'

will reset the key mappings introduced by this script.

PS: A reboot should also solve the problem.

answered Nov 30, 2022 at 22:15

nohillside♦

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iknow this command but i want block this script
– wolfe_m
Commented Nov 30, 2022 at 22:26
1

@wolfe_m You can't block scripts from getting executed.
– nohillside ♦
Commented Nov 30, 2022 at 22:41
3

Don't let your friend near your computer.
– IconDaemon
Commented Nov 30, 2022 at 23:47

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