useradd

useradd [options] [user] [Options: -c comment -d dir -e date -f days -g group -G groups -k [dir] -m -M -n -o -p passwd -r -s shell -u uid -D [options] ]

System administration command. Create new user accounts or update default account information. Unless invoked with the -D option, user must be given. useradd will create new entries in system files. Home directories and initial files may also be created as needed.