[code]adduser -d /home/USERNAME -m USERNAME[/code]
-d means — The new user will be created using HOME_DIR as the value for the user´s login directory.
-m means — Create the user´s home directory if it does not exist.
[code]usermod -G group1, group2, group3 USERNAME[/code]
-G means — a list of supplementary groups which the user is also a member of.