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.\" XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX .\" DO NOT EDIT! Generated from XML source. .\" XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX .de Sh \" Subsection .br .if t .Sp .ne 5 .PP \fB\\$1\fR .PP .. .de Sp \" Vertical space (when we can't use .PP) .if t .sp .5v .if n .sp .. .de Ip \" List item .br .ie \\n(.$>=3 .ne \\$3 .el .ne 3 .IP "\\$1" \\$2 .. .TH "LOGRESOLVE" 1 "2012-01-09" "Apache HTTP Server" "logresolve" .SH NAME logresolve \- Resolve IP-addresses to hostnames in Apache log files .SH "SYNOPSIS" .PP \fBlogresolve\fR [ -\fBs\fR \fIfilename\fR ] [ -\fBc\fR ] < \fIaccess_log\fR > \fIaccess_log\&.new\fR .SH "SUMMARY" .PP 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\&. .PP 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\&. .SH "OPTIONS" .TP -s \fIfilename\fR Specifies a filename to record statistics\&. .TP -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\&.