//usage: "\n -h DIR Home directory"
//usage: "\n -g GECOS GECOS field"
//usage: "\n -s SHELL Login shell"
-//usage: "\n -G GRP Add user to existing group"
+//usage: "\n -G GRP Group"
//usage: "\n -S Create a system user"
//usage: "\n -D Don't assign a password"
//usage: "\n -H Don't create home directory"