bspatch.1 (2418B)
1 .\"- 2 .\" Copyright 2003-2005 Colin Percival 3 .\" All rights reserved 4 .\" 5 .\" Redistribution and use in source and binary forms, with or without 6 .\" modification, are permitted providing that the following conditions 7 .\" are met: 8 .\" 1. Redistributions of source code must retain the above copyright 9 .\" notice, this list of conditions and the following disclaimer. 10 .\" 2. Redistributions in binary form must reproduce the above copyright 11 .\" notice, this list of conditions and the following disclaimer in the 12 .\" documentation and/or other materials provided with the distribution. 13 .\" 14 .\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 15 .\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 16 .\" WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 .\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY 18 .\" DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 22 .\" STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 23 .\" IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 24 .\" POSSIBILITY OF SUCH DAMAGE. 25 .\" 26 .\" $FreeBSD$ 27 .\" 28 .Dd May 18, 2003 29 .Dt BSPATCH 1 30 .Os 31 .Sh NAME 32 .Nm bspatch 33 .Nd apply a patch built with 34 .Xr bsdiff 1 35 .Sh SYNOPSIS 36 .Nm 37 .Ar oldfile newfile patchfile 38 .Sh DESCRIPTION 39 The 40 .Nm 41 utility generates 42 .Ar newfile 43 from 44 .Ar oldfile 45 and 46 .Ar patchfile 47 where 48 .Ar patchfile 49 is a binary patch built by 50 .Xr bsdiff 1 . 51 .Pp 52 The 53 .Nm 54 utility uses memory equal to the size of 55 .Ar oldfile 56 plus the size of 57 .Ar newfile , 58 but can tolerate a very small working set without a dramatic loss of 59 performance. 60 .Sh SEE ALSO 61 .Xr bsdiff 1 62 .Sh AUTHORS 63 .An Colin Percival Aq Mt cperciva@FreeBSD.org 64 .Sh BUGS 65 The 66 .Nm 67 utility does not verify that 68 .Ar oldfile 69 is the correct source file for 70 .Ar patchfile . 71 Attempting to apply a patch to the wrong file will usually produce 72 garbage; 73 consequently it is strongly recommended that users of 74 .Nm 75 verify that 76 .Ar oldfile 77 matches the source file from which 78 .Ar patchfile 79 was built, by comparing cryptographic hashes, for example. 80 Users may also wish to verify after running 81 .Nm 82 that 83 .Ar newfile 84 matches the target file from which 85 .Ar oldfile 86 was built.