title: “User / Group Administration”
date: 2015-03-23T12:39:21
slug: user-group-administration

Add User To System

useradd username

Add User To System and create Home Directory

useradd -m username

Add User To System and create Home Directory with specified Path

useradd -m username -d /var/www/home

Add User To System and specified primary group

useradd -g groupname username

Add User To System and specified supplementary groups

useradd -G groupname1,groupname2,groupname3 username

Add user to a group (leave primary group unchanged)

usermod -a -G groupname user

Change Users primary group

usermod -g groupname user