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| 23 | h266 | 1 | .\"- |
| 2 | .\" Copyright 2003-2005 Colin Percival |
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| 3 | .\" All rights reserved |
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| 4 | .\" |
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| 5 | .\" Redistribution and use in source and binary forms, with or without |
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| 6 | .\" modification, are permitted providing that the following conditions |
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| 7 | .\" are met: |
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| 8 | .\" 1. Redistributions of source code must retain the above copyright |
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| 9 | .\" notice, this list of conditions and the following disclaimer. |
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| 10 | .\" 2. Redistributions in binary form must reproduce the above copyright |
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| 11 | .\" notice, this list of conditions and the following disclaimer in the |
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| 12 | .\" documentation and/or other materials provided with the distribution. |
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| 13 | .\" |
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| 14 | .\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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| 15 | .\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
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| 16 | .\" WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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| 17 | .\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY |
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| 18 | .\" DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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| 19 | .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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| 20 | .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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| 21 | .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
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| 22 | .\" STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING |
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| 23 | .\" IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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| 24 | .\" POSSIBILITY OF SUCH DAMAGE. |
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| 25 | .\" |
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| 26 | .\" $FreeBSD: src/usr.bin/bsdiff/bsdiff/bsdiff.1,v 1.1 2005/08/06 01:59:05 cperciva Exp $ |
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| 27 | .\" |
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| 28 | .Dd May 18, 2003 |
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| 29 | .Dt BSDIFF 1 |
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| 30 | .Os FreeBSD |
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| 31 | .Sh NAME |
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| 32 | .Nm bsdiff |
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| 33 | .Nd generate a patch between two binary files |
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| 34 | .Sh SYNOPSIS |
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| 35 | .Nm |
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| 36 | .Ao Ar oldfile Ac Ao Ar newfile Ac Ao Ar patchfile Ac |
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| 37 | .Sh DESCRIPTION |
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| 38 | .Nm |
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| 39 | compares |
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| 40 | .Ao Ar oldfile Ac |
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| 41 | to |
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| 42 | .Ao Ar newfile Ac |
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| 43 | and writes to |
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| 44 | .Ao Ar patchfile Ac |
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| 45 | a binary patch suitable for use by bspatch(1). |
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| 46 | When |
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| 47 | .Ao Ar oldfile Ac |
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| 48 | and |
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| 49 | .Ao Ar newfile Ac |
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| 50 | are two versions of an executable program, the |
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| 51 | patches produced are on average a factor of five smaller |
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| 52 | than those produced by any other binary patch tool known |
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| 53 | to the author. |
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| 54 | .Pp |
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| 55 | .Nm |
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| 56 | uses memory equal to 17 times the size of |
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| 57 | .Ao Ar oldfile Ac , |
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| 58 | and requires |
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| 59 | an absolute minimum working set size of 8 times the size of oldfile. |
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| 60 | .Sh SEE ALSO |
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| 61 | .Xr bspatch 1 |
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| 62 | .Sh AUTHORS |
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| 63 | .An Colin Percival Aq cperciva@freebsd.org |