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XDELTA3(1)		     General Commands Manual		      XDELTA3(1)

NAME
     xdelta3 - VCDIFF (RFC 3284) binary diff tool

SYNOPSIS
     xdelta3 [command] [options] [input [output]]

DESCRIPTION
     xdelta3  is  a  binary diff tool that uses the VCDIFF (RFC 3284) format and
     compression.

COMMANDS
     config
	    prints xdelta3 configuration

     decode
	    decompress the input, also set by -d

     encode
	    compress the input, also set by -e (default)

     test   run the builtin tests

     printdelta
	    print information about the entire delta

     printhdr
	    print information about the first window

     printhdrs
	    print information about all windows

     recode
	    encode with new application/secondary settings

OPTIONS
     standard options:

     -0 .. -9
	    compression level

     -c     use stdout

     -d     decompress

     -e     compress

     -f     force overwrite

     -h     show help

     -q     be quiet

     -v     be verbose (max 2)

     -V     show version

     memory options:

     -B     bytes source window size

     -W     bytes input window size

     -P     size compression duplicates window

     -I     size instruction buffer size (0 = unlimited)

     compression options:

     -s     source source file to copy from (if any)

     -S [djw|fgk]
	    enable/disable secondary compression

     -N     disable small string-matching compression

     -D     disable external decompression (encode/decode)

     -R     disable external recompression (decode)

     -n     disable checksum (encode/decode)

     -C     soft config (encode, undocumented)

     -A [apphead]
	    disable/provide application header (encode)

     -J     disable output (check/compute only)

     -T     use alternate code table (test)

NOTES
     The XDELTA environment variable may contain extra args:

	    XDELTA="-s source-x.y.tar.gz" \
	    tar --use-compress-program=xdelta3 -cf \
	    target-x.z.tar.gz.vcdiff target-x.y/

EXAMPLES
     Compress the differences between SOURCE and  TARGET,  yielding  OUT,  using
     "djw" secondary compression:

     xdelta3 -S djw -s SOURCE TARGET OUT

     Do the same, using standard input and output:

     xdelta3 -S djw -s SOURCE < TARGET > OUT

     To decompress OUT, using SOURCE, yielding TARGET:

     xdelta3 -d -s SOURCE OUT TARGET

AUTHOR
     xdelta3 was written by Josh MacDonald <josh.macdonald@gmail.com>.

     This  manual page was written by Leo 'costela' Antunes <costela@debian.org>
     for the Debian project (but may be used by others).

Xdelta3 			   August 2009			      XDELTA3(1)

Want to link to this manual page? Use this URL:
<https://man.freebsd.org/cgi/man.cgi?query=xdelta3&sektion=1&manpath=FreeBSD+Ports+15.1.quarterly>

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