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Copyright 2003-2005 Colin Percival
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IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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$FreeBSD$

.Dd May 18, 2003 .Dt BSPATCH 1 .Os .Sh NAME .Nm bspatch .Nd apply a patch built with .Xr bsdiff 1 .Sh SYNOPSIS .Nm .Ar oldfile newfile patchfile .Sh DESCRIPTION The .Nm utility generates .Ar newfile from .Ar oldfile and .Ar patchfile where .Ar patchfile is a binary patch built by .Xr bsdiff 1 .

p The .Nm utility uses memory equal to the size of .Ar oldfile plus the size of .Ar newfile , 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 Mt cperciva@FreeBSD.org .Sh BUGS The .Nm utility does not verify that .Ar oldfile is the correct source file for .Ar patchfile . Attempting to apply a patch to the wrong file will usually produce garbage; consequently it is strongly recommended that users of .Nm verify that .Ar oldfile matches the source file from which .Ar patchfile was built, by comparing cryptographic hashes, for example. Users may also wish to verify after running .Nm that .Ar newfile matches the target file from which .Ar was built.