What is the purpose of the 'sudo su' command?

The command 'sudo su' is used to switch to the root user account in Linux systems. When executed, it allows a user with the appropriate privileges to gain root access temporarily. The 'sudo' part of the command stands for "superuser do," which grants permission to run commands as the superuser or another user based on the configurations in the sudoers file. By appending 'su' (which stands for "substitute user") to 'sudo,' the command effectively allows the user to change their identity to that of the root user, giving them elevated permissions to perform administrative tasks.

This is particularly useful for performing system-level changes or configurations that require higher privileges than those afforded to standard user accounts. It's important to note that using 'sudo su' requires the user to either enter their own password or, depending on the configuration, the root password, providing a layer of security to control access to the root account.

In contrast, the other options serve different functions that are unrelated to switching user accounts or gaining elevated privileges.