sudo command in linux and unix

The Unix commands sudo and su allow access to other commands as a different user.

The sudo command

The sudo command stands for "superuser do". It prompts you for your personal password and confirms your request to execute a command by checking a file, called sudoers, which the system administrator configures. Using the sudoers file, system administrators can give certain users or groups access to some or all commands without those users having to know the root password. It also logs all commands and arguments so there is a record of who used it for what, and when.
To use the sudo command, at the command prompt, enter:

sudo command

Replace command with the command for which you want to use sudo.

The sudo command also makes it easier to practice the principle of least privilege (PoLP), which is a computer security concept that helps control system access and potential system exploits and compromises.

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