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From: Lawrence D'Oliveiro <ldo@nz.invalid>
Newsgroups: comp.os.linux.misc
Subject: Re: Yet Another New systemd Feature
Date: Tue, 7 May 2024 07:19:34 -0000 (UTC)
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On Mon, 6 May 2024 22:00:06 -0000 (UTC), Lawrence D'Oliveiro wrote:

> Pro tip: one of the commands you can feed to sudo is “/bin/bash”.

And for added points, you know how you open a terminal as an ordinary 
user, only to type “sudo /bin/bash” into it? But that means you create a 
process running “sudo”, which in turns spawns the process running bash. 
Thus, to terminate the session, you have to type CTRL/D twice.

Whereas, if the command you typed was “exec sudo /bin/bash”, then you only 
spawn one process, and only need one CTRL/D to terminate.

Of course, if you get your password wrong, you lose the terminal window 
and have to open it again ...