logresolve - Resolve IP-addresses to hostnames in Apache
   log files - Apache HTTP Server Version 2.4








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Apache HTTP Server Version 2.4



Apache > HTTP Server > Documentation > Version 2.4 > Programslogresolve - Resolve IP-addresses to hostnames in Apache
   log files

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     logresolve is a post-processing program to
     resolve IP-addresses in Apache's access logfiles.  To minimize
     impact on your nameserver, logresolve 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.

 Synopsis
 Options
See alsoComments


Synopsis

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


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.




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