Red Zero

It's your first day at a new tech company. You connect your terminal using the instructions they provided, specify a username and password, and then...

Something's off. None of the commands work.

You ask for help, and then check the man.

Using the hints left by a mysterious SysAdmin, complete the user manual by finding the passphrases and replacing the missing pages. Track down this mysterious R0 and uncover the truth - or be locked out forever.

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Note: real knowledge of *nix systems will help, but this is not a complete or perfectly accurate implementation - curiosity, experimentation and careful observation will win over real-world expertise.