User Management
Create a User
# Create user with home directory
sudo useradd -m username
# You probably also want to set their default shell
sudo chsh -s /bin/bash username
Change Password
sudo passwd username
Set Default Shell
sudo chsh -s /bin/bash username
Delete User
# Delete user and home directory
sudo userdel -r username
# You may also want to delete their group
sudo groupdel groupname