sudo

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The sudo command in the Ubuntu distribution of Linux

The sudo command is a program for Unix-like operating systems like Linux distibutions which allows a user to run a program as the root (the administator). It is an abbreviation for "super user do". "Superuser" means "administrator".

Importance[change | change source]

It is important to have a sudo command as it keeps normal users from making changes to the computer's files that can seriously mess up the system, making it unusable.

Usage[change | change source]

The sudo command must be used from the command line, but it can run together with any other commands and software that use the command line. For example, to delete a file(Example.php in this example) that require permissions that normal users do not typically have, the user can type:

sudo rm -r Example.php

Typing the above would show up like this:

user@user-desktop:~$ sudo rm -r Example.php

After that, the program would ask for the password. When the password is entered correctly, the computer would then run the command. Programs with a graphical user interface can also be run with sudo, but it may mess them up. Various desktops for Unix-like systems usually have their own version of sudo for such programs.