| .\"- | |
| .\" 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/bsdiff/bsdiff.1,v 1.1 2005/08/06 01:59:05 cperciva Exp $ | |
| .\" | |
| .Dd May 18, 2003 | |
| .Dt BSDIFF 1 | |
| .Os FreeBSD | |
| .Sh NAME | |
| .Nm bsdiff | |
| .Nd generate a patch between two binary files | |
| .Sh SYNOPSIS | |
| .Nm | |
| .Ar oldfile newfile patchfile | |
| .Sh DESCRIPTION | |
| .Nm | |
| compares | |
| .Ar oldfile | |
| to | |
| .Ar newfile | |
| and writes to | |
| .Ar patchfile | |
| a binary patch suitable for use by | |
| .Xr bspatch 1 . | |
| When | |
| .Ar oldfile | |
| and | |
| .Ar newfile | |
| are two versions of an executable program, the | |
| patches produced are on average a factor of five smaller | |
| than those produced by any other binary patch tool known | |
| to the author. | |
| .Pp | |
| .Nm | |
| uses memory equal to 17 times the size of | |
| .Ar oldfile , | |
| and requires | |
| an absolute minimum working set size of 8 times the size of oldfile. | |
| .Sh SEE ALSO | |
| .Xr bspatch 1 | |
| .Sh AUTHORS | |
| .An Colin Percival Aq cperciva@freebsd.org |