What is $sudo?

$sudo is a Unix/Linux command that stands for "superuser do". It allows user to elevate their privileges to perform tasks that require administrative or root access. By using the command, a normal user can execute a command or run a program with the permissions of a superuser.

In general, the syntax for using the sudo command is as follows:

$sudo [command]

For example, to install a package as root using apt-get, one would use:

$sudo apt-get install [package]

Users who have been given sudo privileges by the system administrator can use the sudo command to execute tasks that are usually only accessible by the root user. However, it is important to use the sudo command with caution, as it can be used to execute potentially harmful commands that can cause damage to the system. Incorrect use of the sudo command can also lead to security vulnerabilities.