Command summary for login names, system IDs, and passwords

Commands are available for working with login names, system IDs, and passwords.

Login and logout commands
Item Description
login Initiates your session
logout Stops all your processes
shutdown Ends system operation
su Changes the user ID associated with a session
touch Updates the access and modification times of a file, or creates an empty file
User and system identification commands
Item Description
id Displays the system identifications of a specified user
logname Displays login name.
uname Displays the name of the current operating system
who Identifies the users currently logged in
whoami Displays your login name
Password command
Item Description
passwd Changes a user's password