Lziprecover

As its name suggests, Lziprecover is an open source and totally free recovery tool for Lzip compressed files. It can also decompress .lz files.

Lziprecover is crafted in such a way that it can recover badly damaged files, repair somewhat damaged files, test the integrity of lz files, and decompress files.

It can also extract a range of bytes from a lz file, and list the actual size of multi-member files, decompress and recover files produced by any of the archivers from the lzip family, such as lzip, minilzip/lzlib, plzip, pdlzip and clzip.

Lziprecover makes lzip files resistant to bit-flip, it's able to safely merge multiple damaged backup copies, and it efficiently extracts a range of bytes from a multi-member files.

What is new in this release:

• Compression ratio of option '-9' has been slightly increased.
• Compression time has been reduced by 4%.
• Compression time of option '-0' has been reduced by 2%.
• main.cc (close_and_set_permissions): Behave like 'cp -p'.
• Minor improvements.
• lzip.texinfo: Renamed to lzip.texi.
• License changed to GPL version 2 or later.

What is new in version 1.15:

• Minor changes have been made.
• The chapter "Unzcrash" has been added to the manual.

What is new in version 1.14 / 1.15 Pre2:

• The new option "-i, --ignore-errors", which in conjunction with "-D" decompresses all the recoverable data in all members of a file without having to split it first, has been added.
• Option "-l, --list" now accepts more than one file.
• Decompression time has been reduced by 12%.
• "--split" now uses as few digits as possible in the names of the files produced, depending on the number of members in the input file.
• "--split" in verbose mode now shows the names of files being created.
• The targets "install-as-lzip" and "install-bin" have been added to the Makefile.

What is new in version 1.14 RC3:

• The new option "-i, --ignore-errors", which in conjunction with "-D" decompresses all the recoverable data in all members of a file without having to split it first, has been added. "--split" now uses as few digits as possible in the names of the files produced, depending on the number of members in the input file. "--split" in verbose mode now shows the names of the files being created.

What is new in version 1.14 RC2:

• This version adds minor fixes.
• When decompressing or testing, the file version is now shown only if verbosity is >= 4.

What is new in version 1.15 Pre1:

• Decompression time has been reduced by 1%.
• File version is now shown only if verbosity >= 4.
• The option "-n, --threads" is now accepted and ignored for compatibility with plzip.
• The chapter "Stream Format" and the appendix "Reference source code" have been added to the manual.

What is new in version 1.14 RC1:

• The option "-l, --list" now accepts more than one file.
• Decompression time has been reduced by 12%.
• The targets "install-as-lzip" and "install-bin" have been added to the Makefile.

What is new in version 1.13:

• Lziprecover is now distributed in its own package. Until version 1.12 it was included in the lzip package. Previous entries in this file are taken from there.
• lziprecover.cc: Renamed to main.cc.
• New files merge.cc, repair.cc, split.cc, and range_dec.cc.
• main.cc: Added decompressor options (-c, -d, -k, -t) so that a external decompressor is not needed for recovery nor for "make check".
• Added new option '-D, --range-decompress' which extracts a range of bytes decompressing only the members containing the desired data.
• Added new option '-l, --list' which prints correct total file sizes and ratios even for multi-member files.
• merge.cc repair.cc: Remove output file if recovery fails.
• Changed quote characters in messages as advised by GNU Standards.
• split.cc: Use Boyer-Moore algorithm to search for headers.
• configure: 'datadir' renamed to 'datarootdir'.