what if your username was a filename?
mine could be a makefile, if you named it like this:
p(rtl override)qn.mk
there are other possibilities but they’re less interesting
id file -
An ID file contains identifying information for a Domino Server and Lotus Notes user. It is created by the Domino administrator and includes the user's name, Notes license number, secure certificate, public and private key, and a password.
er file -
An ER file is an audio file used by Newer Super Mario Bros. Wii, a fan-made sequel to Nintendo's New Super Mario Bros. Wii. It contains a sound effect or music played in the game. ER files are similar to the .BRSTM audio files used by official Wii games.
(odd, i thought it would be erlang)
eid and die don’t exist, but there are d, i, e, and r files, so you can use those
i’m using https://fileinfo.com/extension/d, so there could be more secret files that use .d as their extension but these are just the popular ones