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Command su is a term used by computer users to execute commands with the rights of another user account. It stands for "substitute user". It runs a shell without modifying the user environment or current working directory. The superuser account of the system is utilised by default when the command is run without providing the new user id as a command-line argument.What is Command in linux ?Based on the Linux Kernel, the Linux operating system family is an open-source group of Unix systems. They consist of Red Hat, Fedora, Debian, openSUSE, and Ubuntu. It is typical practise to use Linux to manage a Virtual Private Server (VPS).In order to access the features of the Linux operating system, you must utilise a shell, a programme. Since most Linux distributions employ a GUI, they are user-friendly for beginners.An application or tool that runs on the CLI, a console that communicates with the system through texts and processes, is known as a Linux command. It resembles Windows' Command Prompt programme in many ways.By hitting Enter at the end of the line, Linux commands are carried out in the Terminal. You may use commands to carry out a range of operations, including managing users, installing packages, and manipulating files.To learn more about Command refer :https://brainly.com/question/25480553#SPJ4