everything is a file lol, unlike on Windows where a lot of things are GUI based:
- Want to change your grub font size? Heres a file.
- Your python gives dependencies errors? Well, because the libraries (aka files) are in a different directory.
- want to change your password and username? Heres a file to change .....so on and so forth
On Linux you have a lot of power, can use sudo to make changes to a file. If you know what youre doing, great. If you dont, system can break. Even without sudo, a misplace / mistype of files in the /home directory can cause weird stuff.
So TLDR is: be careful when make changes to files on Linux. Dont listen to stranger on forum who gives out command to paste and run. Do your research what the command does.