I have produced a new video that you you guys may enjoy. It is all about disabling the file extension warning when you change a file extension. For example, if you change a file extension from a png to a jpg, your mac will come up with a warning asking if you want to make the change. Most of the time you know you are going to change the file extension, as you have just made the change. This video will show you how to disable this warning.
Disable File Extension Warning
To disable this warning, enter a simple command. The warning message will disappear.