Having threads to do some heavy lifting and long processing in the background is pretty standard stuff. Very often you would want to notify or prompt the user after the background task has finished by displaying a Dialog. The displaying
Change the date and time (or any other EXIF image meta-data) of pictures with Ubuntu
There is a very flexible and easy Linux tool that helps you change the EXIF meta-data of images. It allows you to change individual files or whole bunch of them with one command. You can also put different rules about