Laughed for several minutes from this comic.

It’s not often that a simple comic will make me laugh for several minutes, but I thought this one was great.

I found it originally at https://www.redhat.com/magazine/025nov06/features/gifts/xkcd.jpg. [Updated in 2024] XKCD now has an archive and this is at https://xkcd.com/149/

“sudo” is Linux program that allows regular users to execute certain commands as root. Often, when working as a non-root user, you will type one command, and it complain that you need to be root to run it. You would then quickly add “sudo” to the beginning of the command and execute it again, this time running as root, and the command will run successfully.

[Update in 2024] Explain XKCD has a much more in-depth explanation