"Don't you just hate it when you can't find a file you need, but you know it's on your computer? Wouldn't you like an easy way to track down files anywhere on your computer? If so, I have good news for you, a command available to you at the friendly Linux CLI called find.
"You know what they say, the CLI is such an essential part of the operating system that running an OS without one is like traveling blind. Getting to know the GNU find command can help you better understand why that is true. Climb down out of your GUI for awhile, and let's see what we can find..."