Show Hidden Files in Mac Save Window
Did you know that you can quickly see all the hidden files in a directory from any Mac Save window? Just hit Command+Shift+. (yes, the period key, Command+Shift+Period) and you will toggle the display of hidden files in any Mac OS X save dialogue box. This is really useful for saving and seeing things like .htaccess files in Mac OS X. If you hit the keystroke again you will toggle the hidden files to be invisible again.
If you want a more permanent solution so that you can always see the files, check out our article to show hidden files on Mac OS, which offers a command to always see the hidden files even within the Finder.