Restoring Factory Defaults on Outernet Librarian v0.4.post8

I am new to the forum…I have followed this discussion
I forget password,how to reset it?

after logging in and when i try to stop the librarian service, the response i get is:-

-sh service: not found

it is obvious i cannot proceed. Is outernet a superuser or is something is wrong?
The outernet software is Librarian v0.4post8

I await your assistance,

You’ll need to sudo first, then you should be able to stop service.

Are you using a Pi? If so, which model?