syslogd(8) on macOS
The text 422e740f4f7a, as Mac OS X 10.5.8, Mac OS X 10.5.7, Mac OS X 10.5.6 shipped it.
Apple System Log server
Flags it lists
-
-D -
-asl_action -
-asl_in -
-bsd_in -
-bsd_out -
-c -
-d -
-db_max -
-dup_delay -
-fs_ttl -
-klog_in -
-l -
-m -
-udp_in -
-utmp_ttl