Method 1
Put a dot at the beginning of the file or directory name.
Method 2
Create a .hidden file, place in a directory in which you need to hide something and write in it a column of the names of files or folders that should be hidden. The case of letters has a meaning, that is, if the name of an element is from a capital letter, then write it in the .hidden file in the same way.
To see the hidden items through the Nautilus file manager, you must press the key combination Ctrl+H or in the “View” menu click “Show hidden files”.