'\" t
.\"     Title: ndiff
.\"    Author: [see the "Authors" section]
.\" Generator: DocBook XSL Stylesheets v1.74.3 <http://docbook.sf.net/>
.\"      Date: 03/25/2009
.\"    Manual: [FIXME: manual]
.\"    Source: [FIXME: source]
.\"  Language: English
.\"
.TH "NDIFF" "1" "03/25/2009" "[FIXME: source]" "[FIXME: manual]"
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.SH "NAME"
ndiff \- Utility to compare the results of Nmap scans
.SH "SYNOPSIS"
.HP \w'\fBndiff\fR\ 'u
\fBndiff\fR [\fIoptions\fR] {\fIa\&.xml\fR} {\fIb\&.xml\fR}
.SH "DESCRIPTION"
.PP
Ndiff is a tool to aid in the comparison of Nmap scans\&. It takes two Nmap XML output files and prints the differences between them: hosts coming up and down, ports becoming open or closed, etc\&.
.PP
Ndiff compares two scans at a time\&. The first scan is called the A scan and the second scan is called the B scan\&.
.SH "OPTIONS SUMMARY"
.PP
\fB\-h\fR, \fB\-\-help\fR
.RS 4
Show a help message and exit\&.
.RE
.PP
\fB\-v\fR, \fB\-\-verbose\fR
.RS 4
Include all hosts and ports in the output, not only those that have changed\&.
.RE
.PP
\fB\-\-text\fR
.RS 4
Write output in human\-readable text format\&.
.RE
.PP
\fB\-\-xml\fR
.RS 4
This option is not currently supported\&.
.RE
.PP
Any other arguments are taken to be the names of Nmap XML output files\&. There must be exactly two\&. The first one listed is the A scan and the second is the B scan\&.
.SH "BUGS"
.PP
Report bugs to the
nmap\-dev
mailing list at
nmap\-dev@insecure\&.org\&.
.SH "HISTORY"
.PP
Ndiff started as a project by Michael Pattrick during the 2008 Google Summer of Code\&. Michael designed the program and led the discussion of its output formats\&. He wrote versions of the program in Perl and C++, but the summer ended shortly after it was decided to rewrite the program in Python for the sake of Windows (and Zenmap) compatibility\&. This Python version was written by David Fifield\&.
.SH "AUTHORS"
.PP
David Fifield
david@bamsoftware\&.com
.PP
Michael Pattrick
mpattrick@rhinovirus\&.org
.SH "WEB SITE"
.PP

\m[blue]\fB\%http://nmap.org/ndiff/\fR\m[]