usermod
Created by : Mr Dk.
2023 / 01 / 14 23:56
Hangzhou, Zhejiang, China
Background
usermod
用于修改用户属性。与用户相关的属性通常保存在 /etc/
下,比如 /etc/passwd
中。usermod
命令将会修改这些文件。
Usage
usermod
一般需要使用超级用户权限来执行:
$ sudo usermod -h
Usage: usermod [options] LOGIN
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
-R, --root CHROOT_DIR directory to chroot into
-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
-Z, --selinux-user SEUSER new SELinux user mapping for the user account
修改 HOME 目录
使用 -d
参数可以修改用户的 HOME 目录:
sudo usermod -d /home/another mrdrivingduck
修改用户所属的用户组
使用 -g
参数:
sudo usermod -g some_group mrdrivingduck
修改用户使用的 Shell
使用 -s
参数:
sudo usermod -s /bin/zsh mrdrivingduck
修改用户 ID
使用 -u
参数:
sudo usermod -u 1234 mrdrivingduck