USERDEL(8) Maintenance Commands and Procedures USERDEL(8)

userdel - delete a user's login from the system

userdel [-r] login

The userdel utility deletes a user account from the system and makes the appropriate account-related changes to the system file and file system.

The following options are supported:


Remove the user's home directory from the system. This directory must exist. The files and directories under the home directory will no longer be accessible following successful execution of the command.

If the user's home directory is located on a separate ZFS file system and the /etc/default/useradd file contains the parameter MANAGE_ZFS set to the value YES, the file system will be destroyed.

The following operands are supported:


An existing login name to be deleted.

The following exit values are returned:


Successful completion.


Invalid command syntax. A usage message for the userdel command is displayed.


The account to be removed does not exist.


The account to be removed is in use.


Cannot update the /etc/group or /etc/user_attr file but the login is removed from the /etc/passwd file.


Cannot remove or otherwise modify the home directory.

configuration file for user and role administrative commands


system password file


system file containing users' encrypted passwords and related information


system file containing group definitions


system file containing additional user attributes

auths(1), passwd(1), profiles(1), roles(1), passwd(5), prof_attr(5), user_attr(5), attributes(7), groupadd(8), groupdel(8), groupmod(8), logins(8), roleadd(8), roledel(8), rolemod(8), useradd(8), usermod(8), zfs(8)

The userdel utility only deletes an account definition that is in the local /etc/group, /etc/passwd, /etc/shadow, and /etc/user_attr file. file. If a network name service is being used to supplement the local /etc/passwd file with additional entries, userdel cannot change information supplied by the network name service.
January 7, 2018 OmniOS