How do Linux users change user groups?

Methods for Linux users to change user groups: 1. Use the "usermod -g" command to forcefully set the group to which a user belongs; 2. Use the "usermod -G" command to change a user to "group(s) )"; 3. Add the user to a certain group "(s)" through the "usermod -a -G" command.

The operating environment of this tutorial: linux5.9.8 system, DELL G3 computer

How do Linux users change the user group?

Linux method of modifying the group of a user

usermod -g 用户组 用户名

Forcibly set the group of a user

usermod -G 用户组 用户名

Change a user to group( s)

usermod -a -G 用户组 用户名

Add the user into a certain group(s)

Attached is usermod usage instructions:

Function description:

Modify user account.

Syntax:

usermod [-LU][-c <备注>][-d <登入目录>][-e <有效期限>][-f <缓冲天数>][-g <群组>][-G <群组>][-l <帐号名称>][-s <shell>][-u <uid>][用户帐号]

Supplementary instructions: usermod can be used to modify various settings of the user account.

Parameters:

-c Modify the remark text of the user account.

-d Login directory> Modify the directory when the user logs in.

-e Modify the validity period of the account.

-f Modify the number of days after the password expires before the account will be closed.

-g Modify the groups to which the user belongs.

-G Modify the additional groups to which the user belongs.

-l Modify the user account name.

-L Lock the user password and make the password invalid.

-s Modify the shell used by the user after logging in.

-u Modify the user ID.

-U Unlock the password.

Related examples:

Linux modify account

Modifying a user account is to change the relevant attributes of the user according to the actual situation, such as user number, home directory, User group, login shell, etc.

Use the usermod command to modify the information of an existing user. The format is as follows:

usermod 选项 用户名

Commonly used options include -c, -d, -m, -g, -G, -s, - u and -o, etc., these options have the same meaning as the options in the useradd command, and they can specify new resource values ​​for the user.

In addition, some systems can use the option: -l new username

This option specifies a new account, that is, changing the original username to a new username.

For example:

# usermod -s /bin/ksh -d /home/z –g developer sam

This command changes the login shell of user sam to ksh, the home directory to /home/z, and the user group to developer.

Recommended learning: "Linux Video Tutorial"

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