unlzma --version (return code: 0)
LZMA command line tool 9.22
LZMA SDK 9.22
unlzma --help (return code: 0)
lzma 9.22 Copyright (C) 2006 Ville Koskinen
Based on LZMA SDK 9.22 Copyright (C) 1999-2011 Igor Pavlov
Usage: unlzma [flags and input files in any order]
-c --stdout output to standard output
-d --decompress force decompression
-z --compress force compression
-k --keep keep (don't delete) input files
-f --force force overwrite of output file and compress links
-t --test test compressed file integrity
-S .suf --suffix .suf use suffix .suf on compressed files
-q --quiet suppress error messages
-v --verbose be verbose
-h --help print this message
-L --license display the license information
-V --version display version numbers of LZMA SDK and lzma
-1 .. -2 fast compression
-3 .. -9 good to excellent compression. -7 is the default.
--fast alias for -1
--best alias for -9 (usually *not* what you want)
Memory usage depends a lot on the chosen compression mode -1 .. -9.
See the man page lzma(1) for details.