Linux in a Nutshell, 6th Edition

Name

newusers

Synopsis

newusers file

System administration command. Create or update system users from entries in file. Each line in file has the same format as an entry in /etc/passwd, except that passwords are unencrypted and group IDs can be given as a name or number. During an update, the password age field is ignored if the user already exists in the /etc/shadow password file. If a group name or ID does not already exist, it will be created. If a home directory does not exist, it will be created.