CLEX (pronounced KLEKS) is a file manager with a full-screen user interface. It displays directory contents including the file status details and provides features like command history, filename insertion, or name completion in order to help users to create commands to be executed by the shell. CLEX is a versatile tool for system administrators and all users that utilize the enormous power of the command line. Its unique one-panel user interface enhances productivity and lessens the probability of mistake. There are no built-in commands, CLEX is an add-on to your favorite shell.