Non-bash related sections

[luxe]

The Common Commands is not bash specific. Any shell would be capable of executing these commands as they are most likely binaries somewhere on the computer (Sometimes they are actually built into the shell, but that's usually for efficiency reasons).

The Permissions section is also not bash specific. It relates to the file system.

I like the direction this cheat sheet is headed, but I think it would be best to throw in a disclaimer. That way newcomers don't fall under the illusion that these are all things that are a part of bash specifically.

So either add a disclaimer, or change the repo to cover all shells(not just bash).