osx man page for logresolve

LOGRESOLVE(8)							    logresolve							     LOGRESOLVE(8)

NAME
       logresolve - Resolve IP-addresses to hostnames in Apache log files

SYNOPSIS
       logresolve [ -s filename ] [ -c ] < access_log > access_log.new

SUMMARY
       logresolve  is a post-processing program to resolve IP-addresses in Apache's access logfiles. To minimize impact on your nameserver, logre-
       solve has its very own internal hash-table cache. This means that each IP number will only be looked up the first time it is found  in  the
       log file.

       Takes  an Apache log file on standard input. The IP addresses must be the first thing on each line and must be separated from the remainder
       of the line by a space.

OPTIONS
       -s filename
	      Specifies a filename to record statistics.

       -c     This causes logresolve to apply some DNS checks: after finding the hostname from the IP address, it looks up the	IP  addresses  for
	      the hostname and checks that one of these matches the original address.

Apache HTTP Server						    2012-03-21							     LOGRESOLVE(8)