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bsdiff

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BSDIFF(1) FreeBSD General Commands Manual BSDIFF(1)

NAME
bsdiff -- generate a patch between two binary files

SYNOPSIS
bsdiff <oldfile> <newfile> <patchfile>

DESCRIPTION
bsdiff compares <oldfile> to <newfile> and writes to <patchfile> a binary
patch suitable for use by bspatch(1). When <oldfile> and <newfile> are
two versions of an executable program, the patches produced are on aver-
age a factor of five smaller than those produced by any other binary
patch tool known to the author.

bsdiff uses memory equal to 17 times the size of <oldfile>, and requires
an absolute minimum working set size of 8 times the size of oldfile.

SEE ALSO
bspatch(1)

AUTHORS
Colin Percival <cpercivaATfreebsd.org>

FreeBSD May 18, 2003 FreeBSD

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