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\" \" lz4.1: This is a manual page for 'lz4' program. This file is part of the \" lz4 <https://code.google.com/p/lz4/> project. \" \" No hyphenation .hy 0 .nr HY 0 .TH lz4 "1" "2014-02-27" "lz4" "User Commands" .SH NAME \fBlz4\fR - Extremely fast compression algorithm .SH SYNOPSIS .TP 5 \fBlz4\fR [\fBOPTIONS\fR] [-|INPUT-FILE] <OUTPUT-FILE> .SH DESCRIPTION .PP \fBlz4\fR is an extremely fast lossless compression algorithm. It is based on the \fBLZ77\fR family of compression scheme. At the compression speed of 400 MB/s per core, \fBlz4\fR is also scalable with multi-core CPUs. It features an extremely fast decoder, with speed in multiple GB/s per core, typically reaching the RAM speed limits on multi-core systems. \fBlz4\fR supports following options .SH OPTIONS .TP .B \-1 fast compression (default) .TP .B \-9 high compression .TP .B \-d decompression .TP .B \-f overwrite output without prompting .TP .B \-h/\-H display help/long help and exit .TP .B \-V display Version number and exit .TP .B \-v verbose mode .TP .B \-q suppress warnings; specify twice to suppress errors too .TP .B \-c force write to standard output, even if it is the console .TP .B \-t test compressed file integrity .TP .B \-z force compression .TP .B \-l use Legacy format (useful for Linux Kernel compression) .TP .B \-B# block size [4-7](default : 7) B4= 64KB ; B5= 256KB ; B6= 1MB ; B7= 4MB .TP .B \-BD block dependency (improve compression ratio) .TP .B \-BX enable block checksum (default:disabled) .TP .B \-Sx disable stream checksum (default:enabled) .TP .B \-b benchmark file(s) .TP .B \-i# iteration loops [1-9](default : 3), benchmark mode only .SH BUGS Report bugs at:- https://code.google.com/p/lz4/ .SH AUTHOR Yann Collet
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42 entries across 42 versions & 1 rubygems