Linux usermod Command

The Linux usermod command is used to modify user accounts.

usermod can be used to modify various settings of a user account.

Syntax

usermod [-LU][-c <comment>][-d &lt;login directory>][-e &lt;expiration date>][-f &lt;inactive days>][-g <group>][-G <group>][-l &lt;account name>][-s <shell>][-u <uid>][user account]

Parameter Description:

-c <comment> 　Modify the comment associated with the user account.
-d <login directory> 　Modify the user's login directory.
-e <expiration date> 　Modify the account's expiration date.
-f <inactive days> 　Modify the number of days after a password expires before the account is disabled.
-g <group> 　Modify the user's primary group.
-G <group> 　Modify the user's supplementary groups.
-l <account name> 　Modify the user's account name.
-L 　Lock the user's password, making it invalid.
-s <shell> 　Modify the shell used by the user upon login.
-u <uid> 　Modify the user's ID.
-U 　Unlock the user's password.

Examples

Change the login directory

# usermod -d /home/hnlinux root

Change the user's UID

# usermod -u 777 root

Linux Command Manual

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