UUCP provides the uucp command, which schedules files to be exchanged with other UUCP systems, and the uux command, which schedules commands to be executed by other UUCP systems. However, the uucp and uux commands do not cause any files to be exchanged or commands to be executed. For this, UUCP provides two daemons called uucico and uuxqt which establish communication sessions, transfer data, and execute commands according to the requests scheduled by uucp and uux.