The uucp programs create individual log files for each program invocation. Periodically, uulog may be executed to prepend these files to the system logfile. This method of logging was chosen to minimize file locking of the logfile during program execution.
The uulog program merges the individual log files and outputs specified log entries. The output request is specified by the use of the following options:
The intersection of lines satisfying the two options is output. A null sys or user means all system names or users respectively.