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.\" Hey, EMACS: -*- nroff -*-
.TH NYDIFF 1 "Mar 12, 2008"
.\" Please adjust this date whenever revising the manpage.
.\"
.SH NAME
nydiff \- tool to compare two versions of a specialized\-format patch
.SH SYNOPSIS
.B nydiff
.IR "oldpam newpam name options" " [ " print " ] [ .go ]"
.SH DESCRIPTION
.PP
\fBnydiff\fP is a tool in the Nypatchy suite of programs
for working with Patchy Master Files (PAM files);
see \fBnypatchy\fP(1). Specifically, it compares two different versions
of the same PAM file and generates a "correction patch" that can be used
by \fBnypatchy\fP to update the older version to the newer version.
.SH USAGE
The parameter \fIoldpam\fP is the name of the older version of the PAM file
(a default extension of ".car" is assumed), \fInewpam\fP is the name of
the newer version, \fIprint\fP is the output file to write to
(the default is standard output if omitted), and \fIoptions\fP is a sequence
of single\-character flags. The parameter \fIname\fP is the name to be
used for the correction file to be generated (the specific filename will be
\fIname\fP.ucra for a correction patch to be used by Nypatchy).
.PP
The command should be ended with ".go" unless one wants to enter the
Nypatchy interactive shell.
.SH OPTIONS
.PP
Note that options should be given as a single string of characters with
no space separation and no use of the \- character (except that it can
be used in place of the options field if no options are desired).
Alphabetic options are not case\-sensitive.
.TP
A
"anyway" \- Bypass the first sanity check on sufficient matching.
.TP
F
"force" \- Bypass the second sanity check on sufficient matching.
.TP
H
Print help information only.
.SH SEE ALSO
.BR fcasplit "(1), " nycheck "(1), " nyindex "(1), "
.BR nylist "(1), " nymerge "(1), " nypatchy "(1), " nyshell "(1), "
.BR nysynopt "(1), " nytidy "(1), " yexpand (1)
.PP
The reference manual for the Nypatchy suite of programs is available
in compressed PostScript format at the following URL:
.br
.I http://wwwasdoc.web.cern.ch/wwwasdoc/psdir/p5refman.ps.gz
.PP
Running the command "nydiff help .no" also gives some brief help on usage.
.SH AUTHOR
This manual page was written by Kevin McCarty <kmccarty@debian.org>
for the Debian GNU/Linux system (but may be used by others). It is
licensed under the GNU General Public License, version 2 or later (at your
choice).
.SH COPYRIGHT
Copyright (C) Kevin B. McCarty, 2008.
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