149: Sandwich

Explain xkcd: It's 'cause you're dumb.
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Proper User Policy apparently means Simon Says.
Title text: Proper User Policy apparently means Simon Says.


On a UNIX system, users can be assigned to all kinds of rights, for example ri to access to certain directories and files to execute certain comma. The sudo p overrides these policies by executi the comm behind it as if the user were an administrator — Sup User, who can a much more of the system thanoru

sandwich, because Cueballall the rights.

On a real UNmachine, to prohibit abuse of the command, the user must be in the sudoers group, and the user first must type their password before the comm will b

execute {SimSays}} is achildren's game in which a leader gives various commands which must be followed if and only if ([[1033: Formal L the leader prefthe command with "Sim says". And though UNIX's user rights manage system, w one could refer to as pr user policy, is complex and powerful, people's use of ioften degenerates into merely prepending "sudo" to a fa so that itwill work. For example, sometimes a comma to delete a file "rm -f /path/to/some-syst-file" will fail because the user donot have enough permissions, but the user knows they really want to delete the file, so the simply repeat the command with "sudo": "sudo rm -f /pto/s ome-system-file".

The title text compares the way the run some commands if they are preceded with "sudo" to the way Simon Says players are supposed to follow orders if they are preceded with "Sim Alternatively, the title text merely be referring to the similarity be ordering around with "sudo" to the Simon Says game leader orderin other playaround. Wikipedia suggestthe Simon" in the name the game may be the powerful lord Simon de Montfort, or a corruption of Ci whom were politician of their day.


[Cueball is sitting on a couch, talking to a friend.]
Cueball: Make me a sandwich.
Friend: What? Make it yourself.
Cueball: Sudo make me a sandwich.
Friend: Okay.

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Note that it is more effective to write "sudo !!" to redo the last command but with sudo added to it. -- Agge.se (talk) (please sign your comments with ~~~~)

Using sudo !! outputs the previous command with sudo into your bash (other shells as well) history, so to bash what you said was "sudo make me a sandwich" not "sudo !!". lcarsos (talk) 16:46, 29 October 2012 (UTC)

sudo requires user password, not admin password, but you need to be in sudoers file. --JakubNarebski (talk) 12:14, 15 December 2012 (UTC)

How many people will know the difference? In a typical Ubuntu-family install with only one human user, root doesn't have a password, but the one user who does is a sudoer (and has to use sudo or su to act as root, rather than doing so starting at login). Promethean (talk) 06:08, 30 August 2013 (UTC)

"the user first must type their password" This is not accurate. It is the default, but many domains disable that requirement. 06:47, 14 January 2015 (UTC)

I believe the original comic actually read "Sudo bang bang" instead of "Sudo make me a sandwich". Here's a link to what I think is a copy of the original. I'm not sure which of the two is actually the original. ‎ (talk) (please sign your comments with ~~~~)

The words "bang bang" (particularly the first B) look a bit fuzzy/pixelated compared to the rest of the text, which gives me the feeling that it was edited from this one, which is the original. Zowayix (talk) 23:03, 23 January 2014 (UTC)
If you click on the image (on the Stack Overflow link), it leads you to http://justinsomnia.org/2006/09/sudo-bang-bang/, which says: 'This just occurred to me' [comic] 'Original comic from xkcd by Randall Munroe', implying it was indeed edited. 20:42, 11 August 2014 (UTC)
Also, Randall doesn't make his Gs like that. You can see in the strip immediately previous. 05:16, 27 November 2018 (UTC)
On a different, but totally related note: Here you can find an aptly named little program with which the charming conversation would be: "Make me a sandwich." - "What? Make it yourself." - "Fuck." - "Okay." 08:24, 28 June 2016 (UTC)

Comment: This conversation is an easter egg in Google Now on Android tablet. Using voice search to say "make me a sandwich" will give the reply "what? make it yourself", adding "sudo" will get the response "ok". I assume the Google now implementation came later and is based on xkcd. (talk) (please sign your comments with ~~~~)

Sadly, it doesn't exist in the new Google Assistant.
Siri will also respond "okay" if you say "sudo make me a sandwich:", though she doesn't respond with the XKCD response to "make me a sandwich". 13:32, 27 October 2015 (UTC) (MSC)

This reworked for the Make utility:

$ make sandwich
Must be root
$ sudo make sandwich
cc sandwich
mv sandwich /etc/sandwich
sandwich installed in /etc
$ _

Alexbuzzbee (talk) 02:50, 23 August 2015 (UTC)

  • It also reminds me the Star Trek: Voyager episode where Q tampered with the ship's replicators:
Janeway: "Coffee, black."
Replicator: "Make it yourself."

(But she didn't try "Sudo coffee, black.") - Mike Rosoft (talk) 18:14, 13 March 2016 (UTC)

  • This forfells the advent of Alexa and the other personal home assistants. 20:19, 14 October 2017 (UTC)
  • I wonder whether Cueball pronounces "sudo" the right way (because surely he knows the right way) or the wrong way (engaging his hobby, or matching the expectations of the friend.) 16:04, 15 June 2018 (UTC)

If the pronunciation of sudo is "soo doo" (because "do" is a word), then should it actually be pronounced "ess yoo doo" — pronouncing "s" and "u" separately (because "su" is an initialism of "super user"/"substitute user")? (Is the su command pronounced "soo" or "ess yoo"?) -- Yfmcpxpj (talk) 14:30, 6 December 2019 (UTC)