Linux adduser command

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The Linux adduser command is used to add user accounts or update default user information.

The adduser and useradd commands are the same command (via symbolic link).

Access Permission: System Administrator.

adduser is used to add users. Conversely, there is also a command to delete users, userdel.Syntax:userdel [login ID]

Syntax

adduser [-c comment] [-d home_dir] [-e expire_date] [-f inactive_time] [-g initial_group] [-G group[,...]] [-m [-k skeleton_dir] | -M] [-p passwd] [-s shell] [-u uid [ -o]] [-n] [-r] loginid

or

adduser -D [-g default_group] [-b default_home] [-f default_inactive] [-e default_expire_date] [-s default_shell]

Parameter Description：

• -c comment The new user is located in the password file (usually /etc/passwd) annotation information
• -d home_dir Set the home directory of the user to home_dir, the default value is the default home plus the user account loginid
• -e expire_date Set the usage period of this account (format as YYYY-MM-DD), the preset value is permanently valid
• -Example of f inactive_time:

Online Examples

Add a general user

# useradd kk //Add user kk

Specify the corresponding user group for the added user

# useradd -g root kk //Add user kk and specify the group of the user as the root user group

Create a system user

# useradd -r kk //Create a system user kk

Specify the home directory for the newly added user/Home Directory

# useradd-d /home/myf kk //The home directory of the newly added user kk is/home/myf
//When the user kk logs in to the host, the default directory entered by the system is/home/myf

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