The /etc/uucp/Poll file contains information for polling remote computers. Each entry in the Poll file contains the name of a remote computer to call, followed by a tab character or a space, followed by the hours the computer should be called. The format of entries in the Poll file are as follows:
sys-name hour [hour …]
For example, the entry eagle 0 4 8 12 16 20 provides polling of computer eagle every four hours.
The uudemon.poll script processes the Poll file but does not actually perform the poll. The script merely sets up a polling work file (always named C.file) in the spool directory. The uudemon.poll script starts the scheduler, and the scheduler examines all work files in the spool directory.