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lunzip - decompressor for lzip files


lunzip [options] [files]


Lunzip is a decompressor for lzip files. It is written in C and its small size makes it
well suited for embedded devices or software installers that need to decompress files but
do not need compression capabilities. Lunzip is fully compatible with lzip-1.4 or newer.

Lunzip provides a 'low memory' mode able to decompress any file using as little memory as
50 kB, irrespective of the dictionary size used to compress the file. To activate it,
specify the size of the output buffer with the '--buffer-size' option and lunzip will use
the decompressed file as dictionary for distances beyond the buffer size. Of course, the
smaller the output buffer size used in relation to the dictionary size, the more accesses
to disk are needed and the slower the decompression is. This 'low memory' mode only works
when decompressing to a regular file.


-h, --help
display this help and exit

-V, --version
output version information and exit

-c, --stdout
send output to standard output

-d, --decompress
decompress (this is the default)

-f, --force
overwrite existing output files

-k, --keep
keep (don't delete) input files

-o, --output=<file>
if reading stdin, place the output into <file>

-q, --quiet
suppress all messages

-t, --test
test compressed file integrity

-u, --buffer-size=<bytes>
set output buffer size in bytes

-v, --verbose
be verbose (a 2nd -v gives more)

If no file names are given, lunzip 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 lunzip to panic.


Report bugs to [email protected]
Lunzip home page: http://www.nongnu.org/lzip/lunzip.html


Copyright © 2015 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.

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