root@ubuntu-14:~# cat /tmp/unl_user_add.sh
## do not forget to change this variables for each user you add
USERNAME=username;
PASSWORD=password;
sqlite3 /opt/unetlab/data/database.sdb "INSERT INTO users (email, name, username, password) VALUES('s.l@as.com', 'bill', '${USERNAME}', '$(echo "" | php)');"