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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-11-30 08:55:12 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-11-30 08:55:12 +0000
commite532a008165c58a0113b41619f09cb444e1dc159 (patch)
tree39ddcb7a19bd3d4f1a31781c6c803998491c5e17 /doc/plzip.1
parentReleasing debian version 1.11-2. (diff)
downloadplzip-e532a008165c58a0113b41619f09cb444e1dc159.tar.xz
plzip-e532a008165c58a0113b41619f09cb444e1dc159.zip
Merging upstream version 1.12~rc1.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'doc/plzip.1')
-rw-r--r--doc/plzip.135
1 files changed, 18 insertions, 17 deletions
diff --git a/doc/plzip.1 b/doc/plzip.1
index 3985e5b..7f16c55 100644
--- a/doc/plzip.1
+++ b/doc/plzip.1
@@ -1,32 +1,33 @@
.\" DO NOT MODIFY THIS FILE! It was generated by help2man 1.49.2.
-.TH PLZIP "1" "January 2024" "plzip 1.11" "User Commands"
+.TH PLZIP "1" "November 2024" "plzip 1.12-rc1" "User Commands"
.SH NAME
plzip \- reduces the size of files
.SH SYNOPSIS
.B plzip
[\fI\,options\/\fR] [\fI\,files\/\fR]
.SH DESCRIPTION
-Plzip is a massively parallel (multi\-threaded) implementation of lzip,
-compatible with lzip 1.4 or newer. Plzip uses the compression library lzlib.
+Plzip is a massively parallel (multi\-threaded) implementation of lzip. Plzip
+uses the compression library lzlib.
.PP
Lzip is a lossless data compressor with a user interface similar to the one
-of gzip or bzip2. Lzip uses a simplified form of the 'Lempel\-Ziv\-Markov
-chain\-Algorithm' (LZMA) stream format to maximize interoperability. The
-maximum dictionary size is 512 MiB so that any lzip file can be decompressed
-on 32\-bit machines. Lzip provides accurate and robust 3\-factor integrity
-checking. Lzip can compress about as fast as gzip (lzip \fB\-0\fR) or compress most
-files more than bzip2 (lzip \fB\-9\fR). Decompression speed is intermediate between
-gzip and bzip2. Lzip is better than gzip and bzip2 from a data recovery
-perspective. Lzip has been designed, written, and tested with great care to
-replace gzip and bzip2 as the standard general\-purpose compressed format for
-Unix\-like systems.
+of gzip or bzip2. Lzip uses a simplified form of LZMA (Lempel\-Ziv\-Markov
+chain\-Algorithm) designed to achieve complete interoperability between
+implementations. The maximum dictionary size is 512 MiB so that any lzip
+file can be decompressed on 32\-bit machines. Lzip provides accurate and
+robust 3\-factor integrity checking. 'lzip \fB\-0\fR' compresses about as fast as
+gzip, while 'lzip \fB\-9\fR' compresses most files more than bzip2. Decompression
+speed is intermediate between gzip and bzip2. Lzip provides better data
+recovery capabilities than gzip and bzip2. Lzip has been designed, written,
+and tested with great care to replace gzip and bzip2 as general\-purpose
+compressed format for Unix\-like systems.
.PP
Plzip can compress/decompress large files on multiprocessor machines much
faster than lzip, at the cost of a slightly reduced compression ratio (0.4
to 2 percent larger compressed files). Note that the number of usable
threads is limited by file size; on files larger than a few GB plzip can use
-hundreds of processors, but on files of only a few MB plzip is no faster
-than lzip.
+hundreds of processors, but on files smaller than 1 MiB plzip is no faster
+than lzip (even at compression level \fB\-0\fR).
+The number of threads defaults to the number of processors.
.SH OPTIONS
.TP
\fB\-h\fR, \fB\-\-help\fR
@@ -132,8 +133,8 @@ License GPLv2+: GNU GPL version 2 or later <http://gnu.org/licenses/gpl.html>
.br
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
-Using lzlib 1.14
-Using LZ_API_VERSION = 1014
+Using lzlib 1.15\-rc1
+Using LZ_API_VERSION = 1015
.SH "SEE ALSO"
The full documentation for
.B plzip