37 lines
788 B
Groff
37 lines
788 B
Groff
.Dd May 18, 2003
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.Dt BSDIFF 1
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.Os FreeBSD
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.Sh NAME
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.Nm bsdiff
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.Nd generate a patch between two binary files
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.Sh SYNOPSIS
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.Nm
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.Ao Ar oldfile Ac Ao Ar newfile Ac Ao Ar patchfile Ac
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.Sh DESCRIPTION
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.Nm
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compares
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.Ao Ar oldfile Ac
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to
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.Ao Ar newfile Ac
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and writes to
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.Ao Ar patchfile Ac
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a binary patch suitable for use by bspatch(1).
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When
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.Ao Ar oldfile Ac
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and
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.Ao Ar newfile Ac
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are two versions of an executable program, the
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patches produced are on average a factor of five smaller
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than those produced by any other binary patch tool known
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to the author.
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.Pp
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.Nm
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uses memory equal to 17 times the size of
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.Ao Ar oldfile Ac ,
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and requires
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an absolute minimum working set size of 8 times the size of oldfile.
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.Sh SEE ALSO
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.Xr bspatch 1
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.Sh AUTHORS
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.An Colin Percival Aq cperciva@daemonology.net
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