For each remote system specified in the Systems configuration file, there is a subdirectory in the /usr/spool/uucp directory named for the system (for example, the subdirectory for a remote system named South is /usr/spool/uucp/south). This subdirectory contains:

• File transfer requests for a remote system.
• Data files for file transfer requests for a remote system.

UUCP data files are created from:

• uucp with the -C option.
• uux requests whose arguments are files that are not on the system running the requested command.
• Execute files, commands that a user on the remote system has requested be run on your system. When you run uuxqt, it looks for files in those directories and runs the commands indicated (if all of the permissions are correct).
• The .Xqtdir subdirectory, which acts as a working directory when uuxqt runs remote commands. After finishing a command, uuxqt removes working files from this directory.