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.\"-
.\" Copyright 2003-2005 Colin Percival
.\" All rights reserved
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted providing that the following conditions
.\" are met:
.\" 1. Redistributions of source code must retain the above copyright
.\" notice, this list of conditions and the following disclaimer.
.\" 2. Redistributions in binary form must reproduce the above copyright
.\" notice, this list of conditions and the following disclaimer in the
.\" documentation and/or other materials provided with the distribution.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
.\" WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
.\" DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
.\" STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
.\" IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
.\" POSSIBILITY OF SUCH DAMAGE.
.\"
.\" $FreeBSD: src/usr.bin/bsdiff/bspatch/bspatch.1,v 1.1 2005/08/06 01:59:06 cperciva Exp $
.\"
.Dd May 18, 2003
.Dt BSPATCH 1
.Os FreeBSD
.Sh NAME
.Nm bspatch
.Nd apply a patch built with bsdiff(1)
.Sh SYNOPSIS
.Nm
.Ao Ar oldfile Ac Ao Ar newfile Ac Ao Ar patchfile Ac
.Sh DESCRIPTION
.Nm
generates
.Ao Ar newfile Ac
from
.Ao Ar oldfile Ac
and
.Ao Ar patchfile Ac
where
.Ao Ar patchfile Ac
is a binary patch built by bsdiff(1).
.Pp
.Nm
uses memory equal to the size of
.Ao Ar oldfile Ac
plus the size of
.Ao Ar newfile Ac ,
but can tolerate a very small working set without a dramatic loss
of performance.
.Sh SEE ALSO
.Xr bsdiff 1
.Sh AUTHORS
.An Colin Percival Aq cperciva@freebsd.org
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