Create a Linux user and delete switching out of the system

Create a Linux user delete switch

useradd username // create user username
passwd username // password for the username

After // created / home username will appear under the folder

userdel username // delete user username

rm -rf username // delete user username directory

// above the root user can use the command

su username // switching users

eg: su root to root user

Linux system log off

1. shutdown -h +1 --1 minute after shutdown
2. shutdown -h now - immediately shutdown
3. halt - immediate shutdown
4. poweroff - immediate shutdown
5. init 0 - immediate shutdown