Window # enter the terminal, the root # command prompt, the user login prompt $ general, the end-user switching ctrl + shift + F2, the terminal exit command exit
#init 0 shutdown reboot reboot ls view files in the current directory ls -a view all files, including hidden files ll -l to view file details
#who am i displays the current user login date set date and time su root user switching the screen to clear clear ctrl + c termination command
#useradd username add username passwd username password
padded key command terminal #tab