.TH "lz4c" 1 "May 2013" "LZ4C" "LZ4C"
.SH NAME
lz4c \- Tool using Fast LZ compression algorithm library
.SH SYNOPSIS
.B lz4c
[options] file ...
.SH DESCRIPTION
\fBLZ4\fP is a very fast lossless compression algorithm.
This uses Dictionary compression, and only supports compression and 
decompression unit blocks.
.br

Infomation about compression ratio and speed (from webpage of lz4):
single thread, Core 2 Duo @3GHz, using the Open-Source Benchmark
program by m^2 compiled with GCC v4.5.2, on the Silesia Corpus.
.br

Name            Ratio   C.speed D.speed
.br
LZ4 (r59)       2.084   330      915 
.br
LZO 2.05 1x_1   2.038   311      480 
.br
QuickLZ 1.5 \-1  2.233   257      277 
.br
Snappy 1.0.5    2.024   227      729 
.br
LZF             2.076   197      465 
.br
FastLZ          2.030   190      420 
.br
zlib 1.2.5 \-1   2.728    39      195 
.br
LZ4 HC (r66)    2.712    18     1020
.br
zlib 1.2.5 \-6   3.095    14      210
.br
.SH OPTIONS:
.TP
.B \\-H
Help (this text + advanced options)
.TP
.B \\-c0/\\-c
Fast compression (default)
.TP
.B \\-c1/\\-hc
\-c1/\-hc: High compression
.TP
.B \\-d
decompression
.TP
.B \\-y
overwrite without prompting
.SH AUTHOR
This manual page was written by Nobuhiro Iwamatsu <iwamatsu@debian.org>
for the Debian GNU/Linux system (but may be used by others).