fb38ddaacb
fuzzer & fullbench : updated to test new functions man : documented -l command (Legacy format, for Linux kernel compression) (issue 102) cmake : improved version by Mika Attila, building programs and libraries (issue 100) xxHash : updated to r33 Makefile : clean also delete local package .tar.gz git-svn-id: https://lz4.googlecode.com/svn/trunk@110 650e7d94-2a16-8b24-b05c-7c0b3f6821cd
87 lines
1.6 KiB
Groff
87 lines
1.6 KiB
Groff
\"
|
|
\" 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 man
|
|
.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)
|
|
.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 |