Question

What do the letters of the su command stand for? what can you do with su besides give yourself root privileges? "what can you do with su besides give yourself root privileges? how would you log in as zach if you did not know his password but knew the root password? how would you establish the same environment that zach has when he first logs in?"?

Answer 1

Super User.
Execute commands that require root privileges.
Log in as the root user, then type 'passwd user'