Can I use it fully offline?
How do I back it up to USB drive?
What does the day-to-day operation of Pass compared to Keepass look like?
I am trying to learn it as I want to use it, as I think that keepass is bloated for my use case, and I would appreciate any help here.
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It’s a password manager that’s conceptually kept as simple as possible. It’s essentially just a bunch of GPG-encrypted files in a folder structure. But you can then get various GUIs and apps to interact with it, if you prefer.
You can read more about it on the Wikipedia link included.
In short it’s a password manager with cli and GUI available.
This.