Stores BNU files until they can be delivered.
The /var/spool/uucppublic directory is the public directory for the Basic Networking Utilities (BNU) facility. One of these directories exists on every system connected by the BNU utilities.
All spooling directories are dynamic, including the public directory. Depending on the size of your installation and the number of files sent to the local /var/spool/uucppublic directory by users on remote systems, this directory can become quite large.
The uudemon.cleanu command, a shell procedure, cleans up all the BNU spooling directories, including the public directories. Use the uucleanup command with the -sSystemName flag to clean up the directories on a specific system.