Is there a way to do this.
Rename every file in the directory to go:
doing this by hand is taking forever LOL.
You should be able to create a bash script to do this.....
This should get your feet wet:
If you're already familiar with regex, you might opt for the 'rename' portion at the bottom of the tutorial.
You can use any programming language that can be interpreted from the command line.
I know you know PHP, so just write a PHP script and run php /path/to/script.php, or put #!/usr/bin/env php at the top of your PHP script, make it executable, and then run it: ./yourscript.php