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lziprecover - recovers data from damaged lzip files


lziprecover [options] [files]


Lziprecover - Data recovery tool and decompressor for the lzip format.

Lziprecover can repair perfectly most files with small errors (up to one single-byte error per member), without the need of any extra redundance at all. Losing an entire archive just because of a corrupt byte near the beginning is a thing of the past.

Lziprecover can also 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.


display this help and exit
output version information and exit
exit with error status if trailing data
convert lzma-alone files to lzip format
write to standard output, keep input files
decompress a range of bytes (N-M) to stdout
overwrite existing output files
make '--range-decompress' ignore data errors
keep (don't delete) input files
print (un)compressed file sizes
correct errors in file using several copies
place the output into <file>
suppress all messages
try to repair a small error in file
split multimember file in single-member files
test compressed file integrity
be verbose (a 2nd -v gives more)

If no file names are given, or if a file is '-', lziprecover decompresses from standard input to standard output. Numbers may be followed by a multiplier: k = kB = 10^3 = 1000, Ki = KiB = 2^10 = 1024, M = 10^6, Mi = 2^20, G = 10^9, Gi = 2^30, etc...

Exit status: 0 for a normal exit, 1 for environmental problems (file not found, invalid flags, I/O errors, etc), 2 to indicate a corrupt or invalid input file, 3 for an internal consistency error (eg, bug) which caused lziprecover to panic.


Report bugs to
Lziprecover home page:


Copyright © 2017 Antonio Diaz Diaz. License GPLv2+: GNU GPL version 2 or later <>
This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.


The full documentation for lziprecover is maintained as a Texinfo manual. If the info and lziprecover programs are properly installed at your site, the command

info lziprecover

should give you access to the complete manual.

April 2017 lziprecover 1.19