Linux basic commands for user system-related commands

1. Format description

"[email protected] Simon" $

"[Email protected] ~" $

Both of these methods represent the same. Simon is the specified user, localhost is the computer name, if not set to localhost by default. Simon, ~ refers to the directory where you are currently located.

Terminal: Command interpreter, simulation shell

2, the user's switch

su[options] [user]

such as: Su-root

The example uses the SU command to change a normal user to the root user and use the option "-" to carry the root environment variable.

Exit from super user to normal user

3. User Management

Add user account

useradd [Options] User name

Useradd YCW

passwd YCW

New Password: (note that entering the password is not displayed)

Retype new Password:

Change of account password

passwd [user Name]

4. System Management Commands (PS and kill)

PS: Displays a list of processes running by that user in the current system

Kill: Terminate the process

Example: Ps-ef (shows the currently running program)

Kill 7421 (terminates 7421 of this process)

5. Disk-related commands (FDISK)

FDISK: You can view the partition of the hard disk, and can partition the hard disk to manage

such as: Fdisk-l

Lists the partitioning of the file system.

Linux basic commands for user system-related commands