Linux command
useradd 命令
安全
权限或系统影响较大，执行前请核对目标。
常用示例
Example
sudo useradd username
Example
sudo useradd -u 1001 username
Example
sudo useradd -s /bin/zsh username
Example
sudo useradd -G group1,group2 username
Example
sudo useradd -m username
Example
sudo useradd -k /etc/skel -m username
Example
sudo useradd -r username
说明
useradd is a low-level utility for adding users to the system. It updates system files and optionally creates home directories with initial files. On Debian-based systems, the higher-level adduser command is often preferred.
参数
- -c, --comment COMMENT
- Set user's full name or description (GECOS field)
- -d, --home-dir HOME_DIR
- Specify custom home directory path
- -e, --expiredate DATE
- Set account expiration date (YYYY-MM-DD)
- -f, --inactive DAYS
- Days after password expires until account is disabled
- -g, --gid GROUP
- Assign primary group
- -G, --groups GROUP1,GROUP2
- Add to supplementary groups
- -k, --skel SKEL_DIR
- Specify skeleton directory for home directory files
- -m, --create-home
- Create the user's home directory
- -M, --no-create-home
- Do not create home directory
- -p, --password PASSWORD
- Set encrypted password
- -r, --system
- Create a system account
- -s, --shell SHELL
- Set login shell
- -u, --uid UID
- Assign specific user ID
- -U, --user-group
- Create a group with same name as user
- -N, --no-user-group
- Do not create a matching group
- -D
- Display or modify default values
FAQ
What is the useradd command used for?
useradd is a low-level utility for adding users to the system. It updates system files and optionally creates home directories with initial files. On Debian-based systems, the higher-level adduser command is often preferred.
How do I run a basic useradd example?
Run `sudo useradd username` in a terminal, then adjust file names, paths, flags, or remote targets for your system.
What does -c, --comment COMMENT do in useradd?
Set user's full name or description (GECOS field)