Linux添加用户(user)到用户组(group)

网络技术 李胜利 2020-07-17 18:49 224 0 0


将一个用户添加到用户组中,千万不能直接用:

usermod -G groupA

这样做会使你离开其他用户组,仅仅做为 这个用户组 groupA 的成员。

应该用 加上 -a 选项:

usermod -a -G groupA user

(FC4: usermod -G groupA,groupB,groupC user)

-a 代表 append, 也就是 将自己添加到 用户组groupA 中,而不必离开 其他用户组。

命令的所有的选项,及其含义:

Options:

-c, –comment COMMENT new value of the GECOS field

-d, –home HOME_DIR new home directory for the user account

-e, –expiredate EXPIRE_DATE set account expiration date to EXPIRE_DATE

-f, –inactive INACTIVE set password inactive after expiration

to INACTIVE

-g, –gid GROUP force use GROUP as new primary group

-G, –groups GROUPS new list of supplementary GROUPS

-a, –append append the user to the supplemental GROUPS

mentioned by the -G option without removing

him/her from other groups

-h, –help display this help message and exit

-l, –login NEW_LOGIN new value of the login name

-L, –lock lock the user account

-m, –move-home move contents of the home directory to the new

location (use only with -d)

-o, –non-unique allow using duplicate (non-unique) UID

-p, –password PASSWORD use encrypted password for the new password

-s, –shell SHELL new login shell for the user account

-u, –uid UID new UID for the user account

-U, –unlock unlock the user account

查看用户所属的组使用命令:

$ groups user

或者查看文件:

$ cat /etc/group


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