*** zstd command line interface 64-bits v1.4.5, by Yann Collet ***
Usage :
zstd.exe [args] [FILE(s)] [-o file]
FILE : a filename
with no FILE, or when FILE is - , read standard input
Arguments :
-# : # compression level (1-19, default: 3)
-d : decompression
-D DICT: use DICT as Dictionary for compression or decompression
-o file: result stored into `file` (only 1 output file)
-f : overwrite output without prompting, also (de)compress links
--rm : remove source file(s) after successful de/compression
-k : preserve source file(s) (default)
-h/-H : display help/long help and exit
Advanced arguments :
-V : display Version number and exit
-c : force write to standard output, even if it is the console
-v : verbose mode; specify multiple times to increase verbosity
-q : suppress warnings; specify twice to suppress errors too
--no-progress : do not display the progress counter
-r : operate recursively on directories
--filelist=FILE : read list of files to operate upon from FILE
--output-dir-flat=DIR : all resulting files are stored into DIR
-- : All arguments after "--" are treated as files
Advanced compression arguments :
--ultra : enable levels beyond 19, up to 22 (requires more memory)
--long[=#]: enable long distance matching with given window log (default: 27)
--fast[=#]: switch to very fast compression levels (default: 1)
--adapt : dynamically adapt compression level to I/O conditions
-T# : spawns # compression threads (default: 1, 0==# cores)
-B# : select size of each job (default: 0==automatic)
--single-thread : use a single thread for both I/O and compression (result slightly different than -T1)
--rsyncable : compress using a rsync-friendly method (-B sets block size)
--exclude-compressed: only compress files that are not already compressed
--stream-size=# : specify size of streaming input from `stdin`
--size-hint=# optimize compression parameters for streaming input of approximately this size
--target-compressed-block-size=# : generate compressed block of approximately targeted size
--no-dictID : don't write dictID into header (dictionary compression only)
--[no-]check : add XXH64 integrity checksum to frame (default: enabled)
--[no-]compress-literals : force (un)compressed literals
--format=zstd : compress files to the .zst format (default)
--format=gzip : compress files to the .gz format
Advanced decompression arguments :
-l : print information about zstd compressed files
--test : test compressed file integrity
-M# : Set a memory usage limit for decompression
--[no-]sparse : sparse mode (default: enabled on file, disabled on stdout)
Dictionary builder :
--train ## : create a dictionary from a training set of files
--train-cover[=k=#,d=#,steps=#,split=#,shrink[=#]] : use the cover algorithm with optional args
--train-fastcover[=k=#,d=#,f=#,steps=#,split=#,accel=#,shrink[=#]] : use the fast cover algorithm with optional args
--train-legacy[=s=#] : use the legacy algorithm with selectivity (default: 9)
-o DICT : DICT is dictionary name (default: dictionary)
--maxdict=# : limit dictionary to specified size (default: 112640)
--dictID=# : force dictionary ID to specified value (default: random)
Benchmark arguments :
-b# : benchmark file(s), using # compression level (default: 3)
-e# : test all compression levels successively from -b# to -e# (default: 1)
-i# : minimum evaluation time in seconds (default: 3s)
-B# : cut file into independent blocks of size # (default: no block)
-S : output one benchmark result per input file (default: consolidated result)
--priority=rt : set process priority to real-time