Lines Matching refs:zstd

1 zstd(1) -- zstd, zstdmt, unzstd, zstdcat - Compress or decompress .zst files
7 `zstd` [*OPTIONS*] [-|_INPUT-FILE_] [-o _OUTPUT-FILE_]
9 `zstdmt` is equivalent to `zstd -T0`
11 `unzstd` is equivalent to `zstd -d`
13 `zstdcat` is equivalent to `zstd -dcf`
18 `zstd` is a fast lossless compression algorithm and data compression tool,
21 `zstd` offers highly configurable compression speed,
26 `zstd` command line syntax is generally similar to gzip,
31   - When compressing a single file, `zstd` displays progress notifications
34   - `zstd` does not accept input from console,
36   - `zstd` displays a short help page when command line is an error.
39 `zstd` compresses or decompresses each _file_ according to the selected
41 If no _files_ are given or _file_ is `-`, `zstd` reads from standard input
43 `zstd` will refuse to write compressed data to standard output
45 Similarly, `zstd` will refuse to read compressed data from standard input
58 `zstd` will decompress such files as if they were a single `.zst` file.
97     Display information related to a zstd compressed file, such as size, ratio, and checksum.
119     This modifier does nothing if `zstd` is compiled without multithread support.
128     `zstd` will dynamically adapt compression level to perceived I/O conditions.
150     Specify the file to be used as a reference point for zstd's diff engine.
161         of speed by specifying `--zstd=targetLength=` to be something large
162         (i.e 4096), and by setting a large `--zstd=chainLog=`
164     `zstd` will periodically synchronize the compression state to make the
195     When handling input from a stream, `zstd` must guess how large the source size
245     support, zstd can compress to or decompress from other compression algorithm
246     formats. Possibly available options are `zstd`, `gzip`, `xz`, `lzma`, and `lz4`.
247     If no such format is provided, `zstd` is the default.
281 `ZSTD_NBTHREADS` can be used to set the number of threads `zstd` will attempt to use during compres…
283 'ZSTD_NBTHREADS` has a default value of (`1`), and is capped at ZSTDMT_NBWORKERS_MAX==200. `zstd` m…
292 `zstd` offers _dictionary_ compression,
294 It's possible to train `zstd` with a set of samples,
306     Supports multithreading if `zstd` is compiled with threading support.
324     By default, zstd will create a 4-bytes random number ID.
350     Supports multithreading if `zstd` is compiled with threading support.
357     `zstd --train-cover FILEs`
359     `zstd --train-cover=k=50,d=8 FILEs`
361     `zstd --train-cover=d=8,steps=500 FILEs`
363     `zstd --train-cover=k=50 FILEs`
365     `zstd --train-cover=k=50,split=60 FILEs`
367     `zstd --train-cover=shrink FILEs`
369     `zstd --train-cover=shrink=2 FILEs`
387     `zstd --train-fastcover FILEs`
389     `zstd --train-fastcover=d=8,f=15,accel=2 FILEs`
400     `zstd --train-legacy FILEs`
402     `zstd --train-legacy=selectivity=8 FILEs`
425 ### --zstd[=options]:  argument
426 `zstd` provides 22 predefined compression levels.
518     Value 0 is special and means "default" : _ovlog_ is automatically determined by `zstd`.
566 `--zstd`=wlog=23,clog=23,hlog=22,slog=6,mml=3,tlen=48,strat=6
578 Report bugs at: https://github.com/facebook/zstd/issues