To reset your admin user's password, run the following command as
the root user in a console on your Rockstor appliance:
(The "root" user is the one created during the initial install
when a password was requested twice.)
From this form you're able to reset passwords for every user with Pincard enabled.
Password reset for root user (user with UID equal to 0) requires email notifications too (One Time Password sent via mail)
