xz will refuse (display an error and skip the file) to write compressed data to standard output if it is a terminal. If no files are given or file is -, xz reads from standard input and writes the processed data to standard output. Xz compresses or decompresses each file according to the selected operation mode. With typical files, XZ Utils create 30 % smaller output than gzip and 15 % smaller output than bzip2. lzma format and raw compressed streams with no container format headers are supported.Ĭompared with gzip or bzip2, xz will create smaller archives but in benchmarks has a slower decompression time and higher memory use. Xz is a general-purpose data compression tool with command line syntax similar to gzip and bzip2. Notices (not warnings or errors) printed on standard error don't affect the exit status. With no FILE, or when FILE is -, reads standard input.ģ - Something worth a warning occurred, but no actual errors occurred. Suppress warnings specify twice to suppress errors tooīe verbose specify twice for even more verboseĭisplay the short help (lists only the basic options) x86 x86 filter (sometimes called BCJ filter)ĭelta filter valid OPTS (valid values default): dist=NUM Hc4, bt2, bt3, bt4 bt4) depth=NUM maximum search depth Nice length of a match (2-273 64) mf=NAME match finder (hc3, Position bits (0-4 0) pb=NUM number of position bits (0-4 Ģ) mode=MODE compression mode (fast, normal normal) nice=NUM Literal context bits (0-4 3) lp=NUM number of literal Preset=NUM reset options to preset number NUM (1-9) dict=NUMĭictionary size (4KiB - 1536MiB 8MiB) lc=NUM number of More of the following options (valid values default): LZMA1 or LZMA2 OPTS is a comma-separated list of zero or Use roughly NUM bytes of memory at maximum 0 indicates theĭefault setting, which depends on the operation mode and theĬustom filter chain for compression (alternative for using Without increasing memory usage of the decoder Use more CPU time when encoding to increase compression ratio

Integrity check type: ‘crc32’, ‘crc64’ (default), or ‘sha256’Ĭompression preset 0-2 fast compression, 3-5 good compression, files0= like -files but use the null character as terminatorīasic file format and compression options:įile format to encode or decode possible values are ‘auto’ Read filenames to process from FILE if FILE is omitted,įilenames are read from the standard input filenames must be Use the suffix ‘.SUF’ on compressed files Write to standard output and don’t delete input files Lzcat is equivalent to xz -format=lzma -decompress -stdout.įorce overwrite of output file and (de)compress links Unlzma is equivalent to xz -format=lzma -decompress. Xzcat is equivalent to xz -decompress -stdout. Xz, unxz, xzcat, lzma, unlzma, lzcat - Compress or decompress.

Linux xz file