/etc/newsyslog question

[Jason Hunt <jason.hunt@niicommunications.com>]

I have the following in /etc/newsylog for messsages:

/var/log/messages                       644  24   *    $MLDO Z

I assumed that this would cause /var/log/messages to be rotated on
last day of the month.  Evidently not.  I used the same format
of FreeBSD, and I couldn't find what ngen meant in man pages for
newssyslog.

My crontab has this entry:

# rotate log files every hour, if necessary
0       *       *       *       *       /usr/bin/newsyslog

anyone?