su = switch user
RTFM, Luke...
The letters "su" in the command "su" stand for "substitute user" or "switch user." It is a command used in Unix and Linux systems to switch the current user to another user account, typically the superuser (root), to perform administrative tasks. Users can also specify a username to switch to a different user account.
$su $reboot or $sudo reboot
It allows you to switch users.
switch user = su $ su above command will change the user to root $su johndoe above command will change the user to johndoe
su command is used to change the user.
For Unix/Linux, use either the 'sudo' command or 'su' to the root account.
You can obtain root permissions in Linux by using the "sudo" command before executing a command that requires elevated privileges. This allows you to temporarily act as the root user to perform administrative tasks. Alternatively, you can switch to the root user using the "su" command by entering the root user's password.
k is not a standard command in Linux.
There is no such command. Obviously, in order to enter a command into the prompt, Linux must already be on.
Super User! That allows you to assume full control over the system (Linux/Unix) when you log on as a regular user. You'll need a password.
In a Linux terminal, the command to create a new directory is: mkdir .
In Linux the chmod command is used to set file permissions.