| .\"- |
| .\" 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 |
| .Ao Ar oldfile Ac Ao Ar newfile Ac Ao Ar patchfile Ac |
| .Sh DESCRIPTION |
| .Nm |
| compares |
| .Ao Ar oldfile Ac |
| to |
| .Ao Ar newfile Ac |
| and writes to |
| .Ao Ar patchfile Ac |
| a binary patch suitable for use by bspatch(1). |
| When |
| .Ao Ar oldfile Ac |
| and |
| .Ao Ar newfile Ac |
| 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 |
| .Ao Ar oldfile Ac , |
| 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 |
