bsdiff(1) [freebsd man page]

BSDIFF(1)						    BSD General Commands Manual 						 BSDIFF(1)

NAME

     bsdiff -- generate a patch between two binary files

SYNOPSIS

     bsdiff oldfile newfile patchfile

DESCRIPTION

     The bsdiff utility 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 average a factor of five smaller than those produced by any
     other binary patch tool known to the author.

     The bsdiff utility 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 <cperciva@FreeBSD.org>

BUGS

     The bsdiff utility does not store the hashes of oldfile or newfile in patchfile.  As a result, it is possible to apply a patch to the wrong
     file; this will usually produce garbage.  It is recommended that users of bsdiff store the hashes of oldfile and newfile and compare against
     them before and after applying patchfile.

BSD
								   May 18, 2003 							       BSD

CP(1)							      General Commands Manual							     CP(1)

NAME

       cp, cpdir - file copy

SYNOPSIS

       cp [-pifsmrRvx] file1 file2
       cp [-pifsrRvx] file ... directory
       cpdir [-ifvx] file1 file2

OPTIONS

       -p     Preserve full mode, uid, gid and times

       -i     Ask before removing existing file

       -f     Forced remove existing file

       -s     Make similar, copy some attributes

       -m     Merge trees, disable the into-a-directory trick

       -r     Copy directory trees with link structure, etc. intact

       -R     Copy directory trees and treat special files as ordinary

       -v     Display what cp is doing

       -x     Do not cross device boundaries

EXAMPLES

       cp oldfile newfile  # Copy oldfile to newfile

       cp -R dir1 dir2	   # Copy a directory tree

DESCRIPTION

       Cp  copies one file to another, or copies one or more files to a directory.  Special files are normally opened and read, unless -r is used.
       -r also copies the link structure, something -R doesn't care about.  The -s option differs from -p that it only copies  the  times  if  the
       target file already exists.  A normal copy only copies the mode of the file, with the file creation mask applied.  Set-uid bits are cleared
       if the owner cannot be set.  (The -s flag does not patronize you by clearing bits.  Alas -s and -r are nonstandard.)

       Cpdir is a convenient synonym for cp -psmr to make a precise copy of a directory tree.

SEE ALSO

       cat(1), mkdir(1), rmdir(1), ln(1), rm(1).

																	     CP(1)