Dell PowerFlex Appliance with PowerFlex 3.x Administration Guide

Red Hat Enterprise Linux user and password management

1. To create a new user, SSH to the jump server and log in as root and type useradd <options> username.
   Where <options> are command-line options as outlined in the following table:

   Option
   -c <comment>	<comment> can be replaced with any string. This option is generally used to specify the full name of a user.
   -d home_directory	Home directory to be used instead of default /home/username/.
   -e date	Date for the account to be disabled in the format YYYY-MM-DD.
   -f days	Number of days after the password expires until the account is disabled. If 0 is specified, the account is disabled immediately after the password expires. If -1 is specified, the account is not disabled after the password expires.
   -g group_name	Group name or group number for the user's default (primary) group. The group must exist prior to being specified here.
   -G group_list	List of additional (supplementary, other than default) group names or group numbers, separated by commas, of which the user is a member. The groups must exist prior to being specified here.
   -m	Create the home directory if it does not exist.
   -M	Do not create the home directory.
   -N	Do not create a user private group for the user.
   -p password	The password encrypted with crypt.
   -r	Create a system account with a UID less than 1000 and without a home directory.
   -s	User's login shell, which defaults to /bin/bash.
   -u uid	User ID for the user, which must be unique and greater than 999.

2. By default, useradd creates a locked user account. To unlock the account, run the following command as root to assign a password: passwd username.