Is it possible to turn off Mac OS X extension hiding?
On the Mac, a lot of programs hide the .zzz extension by default. Is there a way to turn this behaviour off so that extensions are never hidden by default?
I know I don't actually need it, I just prefer it to be there.
Solution 1:
With Finder active, hit Cmd+, to go to preferences. In the advanced section, you will find the option to show file extensions.