lzip/lziprecover
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Merging upstream version 1.25.

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Signed-off-by: Daniel Baumann <daniel@debian.org>
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Daniel Baumann 2025-02-21 11:33:36 +01:00
parent 09c9ea500b
commit ccc1759b5f
Signed by: daniel
GPG key ID: FBB4F0E80A80222F
40 changed files with 207 additions and 245 deletions
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33
README
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@ -1,3 +1,5 @@
See the file INSTALL for compilation and installation instructions.
Description
Lziprecover is a data recovery tool and decompressor for files in the lzip
@ -13,25 +15,6 @@ decompresses the members containing the desired data.
Lziprecover is not a replacement for regular backups, but a last line of
defense for the case where the backups are also damaged.
The lzip file format is designed for data sharing and long-term archiving,
taking into account both data integrity and decoder availability:
* The lzip format provides very safe integrity checking and some data
recovery means. The program lziprecover can repair bit flip errors
(one of the most common forms of data corruption) in lzip files, and
provides data recovery capabilities, including error-checked merging
of damaged copies of a file.
* The lzip format is as simple as possible (but not simpler). The lzip
manual provides the source code of a simple decompressor along with a
detailed explanation of how it works, so that with the only help of the
lzip manual it would be possible for a digital archaeologist to extract
the data from a lzip file long after quantum computers eventually
render LZMA obsolete.
* Additionally the lzip reference implementation is copylefted, which
guarantees that it will remain free forever.
A nice feature of the lzip format is that a corrupt byte is easier to repair
the nearer it is from the beginning of the file. Therefore, with the help of
lziprecover, losing an entire archive just because of a corrupt byte near
@ -48,9 +31,10 @@ Lziprecover is able to recover or decompress files produced by any of the
compressors in the lzip family: lzip, plzip, minilzip/lzlib, clzip, and
pdlzip.
If the cause of file corruption is a damaged medium, the combination
GNU ddrescue + lziprecover is the recommended option for recovering data
from damaged lzip files.
GNU ddrescue provides data recovery capabilities which nicely complement
those of lziprecover. If the cause of file corruption is a damaged medium,
the combination GNU ddrescue + lziprecover is the recommended option for
recovering data from damaged files.
If a file is too damaged for lziprecover to repair it, all the recoverable
data in all members of the file can be extracted with the command
@ -69,8 +53,11 @@ robustness to decompression of corrupted data, inspired by unzcrash.c from
Julian Seward's bzip2. Type 'make unzcrash' in the lziprecover source
directory to build it. Then try 'unzcrash --help'.
Lziprecover uses Arg_parser for command-line argument parsing:
http://www.nongnu.org/arg-parser/arg_parser.html
Copyright (C) 2009-2024 Antonio Diaz Diaz.
Copyright (C) 2009-2025 Antonio Diaz Diaz.
This file is free documentation: you have unlimited permission to copy,
distribute, and modify it.