Merging upstream version 0.7.
Signed-off-by: Daniel Baumann <daniel@debian.org>
This commit is contained in:
parent
fe9dba7d15
commit
238d2661e5
18 changed files with 317 additions and 287 deletions
|
@ -12,16 +12,16 @@ File: plzip.info, Node: Top, Next: Introduction, Up: (dir)
|
|||
Plzip Manual
|
||||
************
|
||||
|
||||
This manual is for Plzip (version 0.6, 20 March 2010).
|
||||
This manual is for Plzip (version 0.7, 3 December 2010).
|
||||
|
||||
* Menu:
|
||||
|
||||
* Introduction:: Purpose and features of plzip
|
||||
* Invoking Plzip:: Command line interface
|
||||
* Program Design:: Internal structure of plzip
|
||||
* File Format:: Detailed format of the compressed file
|
||||
* Problems:: Reporting bugs
|
||||
* Concept Index:: Index of concepts
|
||||
* Introduction:: Purpose and features of plzip
|
||||
* Invoking Plzip:: Command line interface
|
||||
* Program Design:: Internal structure of plzip
|
||||
* File Format:: Detailed format of the compressed file
|
||||
* Problems:: Reporting bugs
|
||||
* Concept Index:: Index of concepts
|
||||
|
||||
|
||||
Copyright (C) 2009, 2010 Antonio Diaz Diaz.
|
||||
|
@ -36,10 +36,10 @@ File: plzip.info, Node: Introduction, Next: Invoking Plzip, Prev: Top, Up: T
|
|||
**************
|
||||
|
||||
Plzip is a massively parallel (multi-threaded), lossless data compressor
|
||||
based on the LZMA algorithm, with very safe integrity checking and a
|
||||
user interface similar to the one of gzip or bzip2. Plzip uses the lzip
|
||||
file format; the files produced by plzip are fully compatible with
|
||||
lzip-1.4 or newer.
|
||||
based on the lzlib compression library, with very safe integrity
|
||||
checking and a user interface similar to the one of bzip2, gzip or lzip.
|
||||
Plzip uses the lzip file format; the files produced by plzip are fully
|
||||
compatible with lzip-1.4 or newer.
|
||||
|
||||
Plzip is intended for faster compression/decompression of big files
|
||||
on multiprocessor machines, which makes it specially well suited for
|
||||
|
@ -98,80 +98,80 @@ The format for running plzip is:
|
|||
|
||||
Plzip supports the following options:
|
||||
|
||||
`--help'
|
||||
`-h'
|
||||
`--help'
|
||||
Print an informative help message describing the options and exit.
|
||||
|
||||
`--version'
|
||||
`-V'
|
||||
`--version'
|
||||
Print the version number of plzip on the standard output and exit.
|
||||
|
||||
`--data-size=SIZE'
|
||||
`-B'
|
||||
`--data-size=SIZE'
|
||||
Set the input data block size in bytes. The input file will be
|
||||
divided in chunks of this size before compression is performed.
|
||||
Valid values range from 8KiB to 1GiB. Default value is two times
|
||||
the dictionary size. Plzip will reduce the dictionary size if it
|
||||
is larger than the chosen data size.
|
||||
|
||||
`--stdout'
|
||||
`-c'
|
||||
`--stdout'
|
||||
Compress or decompress to standard output. Needed when reading
|
||||
from a named pipe (fifo) or from a device.
|
||||
|
||||
`--decompress'
|
||||
`-d'
|
||||
`--decompress'
|
||||
Decompress.
|
||||
|
||||
`--force'
|
||||
`-f'
|
||||
`--force'
|
||||
Force overwrite of output file.
|
||||
|
||||
`--keep'
|
||||
`-k'
|
||||
`--keep'
|
||||
Keep (don't delete) input files during compression or
|
||||
decompression.
|
||||
|
||||
`--match-length=LENGTH'
|
||||
`-m LENGTH'
|
||||
`--match-length=LENGTH'
|
||||
Set the match length limit in bytes. Valid values range from 5 to
|
||||
273. Larger values usually give better compression ratios but
|
||||
longer compression times.
|
||||
|
||||
`--threads=THREADS'
|
||||
`-n THREADS'
|
||||
`--threads=THREADS'
|
||||
Set the number of worker threads. Valid values range from 1 to "as
|
||||
many as your system can support". If this option is not used,
|
||||
plzip tries to detect the number of processors in the system and
|
||||
use it as default value.
|
||||
|
||||
`--output=FILE'
|
||||
`-o FILE'
|
||||
`--output=FILE'
|
||||
When reading from standard input and `--stdout' has not been
|
||||
specified, use `FILE' as the virtual name of the uncompressed
|
||||
file. This produces a file named `FILE' when decompressing, and a
|
||||
file named `FILE.lz' when compressing.
|
||||
|
||||
`--quiet'
|
||||
`-q'
|
||||
`--quiet'
|
||||
Quiet operation. Suppress all messages.
|
||||
|
||||
`--dictionary-size=SIZE'
|
||||
`-s SIZE'
|
||||
`--dictionary-size=SIZE'
|
||||
Set the dictionary size limit in bytes. Valid values range from
|
||||
4KiB to 512MiB. Note that dictionary sizes are quantized. If the
|
||||
specified size does not match one of the valid sizes, it will be
|
||||
rounded upwards.
|
||||
|
||||
`--test'
|
||||
`-t'
|
||||
`--test'
|
||||
Check integrity of the specified file(s), but don't decompress
|
||||
them. This really performs a trial decompression and throws away
|
||||
the result. Use `-tvv' or `-tvvv' to see information about the
|
||||
file.
|
||||
|
||||
`--verbose'
|
||||
`-v'
|
||||
`--verbose'
|
||||
Verbose mode. Show the compression ratio for each file processed.
|
||||
Further -v's increase the verbosity level.
|
||||
|
||||
|
@ -180,15 +180,21 @@ The format for running plzip is:
|
|||
limit) as shown in the table below. Note that `-9' can be much
|
||||
slower than `-1'. These options have no effect when decompressing.
|
||||
|
||||
The bidimensional parameter space of LZMA can't be mapped to a
|
||||
linear scale optimal for all files. If your files are large, very
|
||||
repetitive, etc, you may need to use the `--match-length' and
|
||||
`--dictionary-size' options directly to achieve optimal
|
||||
performance.
|
||||
|
||||
Level Dictionary size Match length limit
|
||||
-1 1 MiB 10 bytes
|
||||
-2 1.5 MiB 12 bytes
|
||||
-3 2 MiB 17 bytes
|
||||
-4 3 MiB 26 bytes
|
||||
-5 4 MiB 44 bytes
|
||||
-6 8 MiB 80 bytes
|
||||
-7 16 MiB 108 bytes
|
||||
-8 24 MiB 163 bytes
|
||||
-1 1 MiB 5 bytes
|
||||
-2 1.5 MiB 6 bytes
|
||||
-3 2 MiB 8 bytes
|
||||
-4 3 MiB 12 bytes
|
||||
-5 4 MiB 20 bytes
|
||||
-6 8 MiB 36 bytes
|
||||
-7 16 MiB 68 bytes
|
||||
-8 24 MiB 132 bytes
|
||||
-9 32 MiB 273 bytes
|
||||
|
||||
`--fast'
|
||||
|
@ -328,11 +334,11 @@ Concept Index
|
|||
|
||||
Tag Table:
|
||||
Node: Top223
|
||||
Node: Introduction791
|
||||
Node: Invoking Plzip3533
|
||||
Node: Program Design7499
|
||||
Node: File Format8161
|
||||
Node: Problems10117
|
||||
Node: Concept Index10646
|
||||
Node: Introduction833
|
||||
Node: Invoking Plzip3592
|
||||
Node: Program Design7840
|
||||
Node: File Format8502
|
||||
Node: Problems10458
|
||||
Node: Concept Index10987
|
||||
|
||||
End Tag Table
|
||||
|
|
Loading…
Add table
Add a link
Reference in a new issue