Linux Add users and Groups

User:
1. Only the root user or a user with root privileges can operate
Add User: Useradd Xiaol
Set Password: passwd xiaol
Delete User: Userdel Xiaol
Delete User and home directory: Userdel-r Xiaol
2. After the user is successfully added, a directory with the word XIAOL will be created automatically under/home as the Xiaol user's main directory
3. When the login is successful with Xiaol, it will automatically enter its own home directory.

Group
1. Add Group: Groupadd Group name
Groupadd gp_1
2. Assigning groups when creating a user: Useradd-g group name User name
Useradd-g gp_1 Xiaol_1
3. Modify the user's group: USERMOD-G Group name User name
Usermod-g Root Xiaol_1

Information for users and groups:
1. View information for all groups in Linux
Cat/etc/group
2. View all user information in Linux
cat/etc/passwd

Linux Add users and Groups