CS 111 - Introduction to Computer Science
Help with Lock Files

If your computer has crashed, or you have logged out without closing Firefox or Eclipse, "lock files" may be left around that give the machine the illusion that you're logged in elsewhere with these applications still running.  This will prevent you from starting them.  On our systems, we have two helpful scripts, fix_firefox and fix_eclipse, for removing such lock files.

To eliminate Firefox lock files:

To eliminate Eclipse lock files: