xdelta3 — это свободная программа, работающая из командной строки, которая позволяет построить разницу между двумя файлами. Результат сравнения представляется в виде стандартного формата VCDIFF.
Compress examples:
	
	
	
		
Decompress examples:
	
	
	
		
usage: xdelta3 [command/options][input [output]]
	
	
	
		
					
					
	
		
	
					
					
					
					
				Compress examples:
		Код:
	
	xdelta3 -s SOURCE TARGET > OUT
xdelta3 -s SOURCE TARGET OUT
xdelta3 -s SOURCE < TARGET > OUT
	Decompress examples:
		Код:
	
	xdelta3 -d -s SOURCE OUT > TARGET
xdelta3 -d -s SOURCE OUT TARGET
xdelta3 -d -s SOURCE < OUT > TARGET
	usage: xdelta3 [command/options][input [output]]
		Код:
	
	special command names:
    config      prints xdelta3 configuration
    decode      decompress the input
    encode      compress the input
    test        run the builtin tests
special commands for VCDIFF inputs:
    printdelta  print information about the entire delta
    printhdr    print information about the first window
    printhdrs   print information about all windows
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
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)