I have some .bin files containing the BIOS of many emulators, and i can't manage to see them anywhere. I'm using Ubuntu 20.04 btw.

I can't see them either...

Seriously, we need a little more information to even try to help you.
Have you ever seen those files on any Linux system?
Where are they stored? Hard drive, USB stick etc.?
What filesystem (usually ext4 or NTFS for hard drive, fat32 or NTFS for USB stick)?

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To add two questions:

How do you know you have them if you don't see them?
Did you try find / -name "*.bin"?

1 members found this post helpful.

As others have said, there's more information needed here. Sorry people are not fully aware of the whole details for your question.

What you seem to be saying is that you know you have binary files. The question is are they an output from an application, or are they just files you have on a media of some type?

You're saying you can't find them, or instead are you saying that you feel very strongly that they should be in a certain location on your drive or directory structure, but you don't see them? Follow-up question there is whether or not you've seen binary files before, and now they are not showing, or something else.

Assuming you do know that file and directory names starting with a dot, such as .profile as an example, those won't show with the default ls command, or also may not show up by default in file managers, however there are forms of the ls command or settings you can use to show those types of files.

As much details as you can provide. Obviously my questions are possible guesses, and your situation may be entirely different and not even close to those guesses. So please clarify. Otherwise I doubt any of us can help you much.