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Diffstat (limited to 'README')
| -rw-r--r-- | README | 33 |
1 files changed, 17 insertions, 16 deletions
@@ -1,10 +1,13 @@ Description Lziprecover is a data recovery tool and decompressor for files in the -lzip compressed data format (.lz), able to repair slightly damaged -files, produce a correct file by merging the good parts of two or more -damaged copies, extract data from damaged files, decompress files and -test integrity of files. +lzip compressed data format (.lz). Lziprecover is able to repair +slightly damaged files, produce a correct file by merging the good parts +of two or more damaged copies, extract data from damaged files, +decompress files and test integrity of files. + +Lziprecover provides random access to the data in multimember files; it +only 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. @@ -20,11 +23,11 @@ availability: merging of damaged copies of a file. * The lzip format is as simple as possible (but not simpler). The - lzip manual provides the 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. + 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. @@ -34,6 +37,10 @@ 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 the beginning is a thing of the past. +For compressible data, multiple lzip-compressed copies have a better +chance of surviving intact than one uncompressed copy using the same +amount of storage space. + 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. @@ -46,12 +53,6 @@ If a file is too damaged for lziprecover to repair it, all the recoverable data in all members of the file can be extracted in one step with the '-D' option. -Lziprecover provides random access to the data in multimember files; it -only decompresses the members containing the desired data. - -Lziprecover can print correct total file sizes and ratios even for -multimember files. - When recovering data, lziprecover takes as arguments the names of the damaged files and writes zero or more recovered files depending on the operation selected and whether the recovery succeeded or not. The @@ -74,7 +75,7 @@ unzcrash.c from Julian Seward's bzip2. Type 'make unzcrash' in the lziprecover source directory to build it. Then try 'unzcrash --help'. -Copyright (C) 2009-2016 Antonio Diaz Diaz. +Copyright (C) 2009-2017 Antonio Diaz Diaz. This file is free documentation: you have unlimited permission to copy, distribute and modify it. |