Advanced commands for Linux users and user groups

Lock account: Passwd-l account name

Passwd-l CLS

command to unlock an account: Passwd-u CLS

The user's password can be canceled: Allows the user to login without a password

Passwd-d CLS

Primary and secondary groups

A user can belong to more than one group at a time

------------------a primary group

------------------multiple satellite groups

Gpasswd-a CLS boss adds the user account CLS to the Boss Group, and the boss Group is a subordinate group of the CLS

Add a user to the satellite group

Users can switch their own group after logging in, if you have a group password, you need to enter the group password

NEWGRP user switch to satellite group by themselves

Delete a user's satellite group

Gpasswd-d CLS boss removes user account CLS from the Boss Group, and the boss Group is a subordinate group of the CLS

When you create a user, you specify both the user's primary group and the user's satellite group

Useradd-g group1-g Group2,group3

-G group1 is the primary group

After-G is a subordinate group

Modify Group Password: GPASSWD Group name

Advanced commands for Linux users and user groups