BSPATCH(1)		  BSD General Commands Manual		    BSPATCH(1)

NAME
     bspatch — apply a patch built with bsdiff(1)

SYNOPSIS
     bspatch oldfile newfile patchfile

DESCRIPTION
     The bspatch utility generates newfile from oldfile and patchfile where
     patchfile is a binary patch built by bsdiff(1).

     The bspatch utility uses memory equal to the size of oldfile plus the
     size of newfile, but can tolerate a very small working set without a dra‐
     matic loss of performance.

SEE ALSO
     bsdiff(1)

AUTHORS
     Colin Percival ⟨cperciva@FreeBSD.org⟩

BUGS
     The bspatch utility does not verify that oldfile is the correct source
     file for patchfile.  Attempting to apply a patch to the wrong file will
     usually produce garbage; consequently it is strongly recommended that
     users of bspatch verify that oldfile matches the source file from which
     patchfile was built, by comparing cryptographic hashes, for example.
     Users may also wish to verify after running bspatch that newfile matches
     the target file from which was built.

BSD				 May 18, 2003				   BSD