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.\" DO NOT MODIFY THIS FILE! It was generated by help2man 1.46.1.
.TH XLUNZIP "1" "April 2020" "xlunzip 0.5" "User Commands"
.SH NAME
xlunzip \- test tool for the lzip_decompress linux module
.SH SYNOPSIS
.B xlunzip
[\fI\,options\/\fR] [\fI\,files\/\fR]
.SH DESCRIPTION
Xlunzip is a test tool for the lzip decompression code of my lzip patch
for linux. Xlunzip is similar to lunzip, but it uses the lzip_decompress
linux module as a backend. Xlunzip tests the module for stream,
buffer\-to\-buffer and mixed decompression modes, including in\-place
decompression (using the same buffer for input and output). You can use
xlunzip to verify that the module produces correct results when
decompressing single member files, multimember files, or the
concatenation of two or more compressed files. Xlunzip can be used with
unzcrash to test the robustness of the module to the decompression of
corrupted data.
.PP
Note that the in\-place decompression of concatenated files can't be
guaranteed to work because an arbitrarily low compression ratio of the
last part of the data can be achieved by appending enough empty
compressed members to a file, masking a high compression ratio at the
beginning of the data.
.SH OPTIONS
.TP
\fB\-h\fR, \fB\-\-help\fR
display this help and exit
.TP
\fB\-V\fR, \fB\-\-version\fR
output version information and exit
.TP
\fB\-c\fR, \fB\-\-stdout\fR
write to standard output, keep input files
.TP
\fB\-d\fR, \fB\-\-decompress\fR
decompress (this is the default)
.TP
\fB\-f\fR, \fB\-\-force\fR
overwrite existing output files
.TP
\fB\-I\fR, \fB\-\-in\-place\fR
decompress or test using only one buffer
.TP
\fB\-k\fR, \fB\-\-keep\fR
keep (don't delete) input files
.TP
\fB\-o\fR, \fB\-\-output=\fR<file>
if reading standard input, write to <file>
.TP
\fB\-q\fR, \fB\-\-quiet\fR
suppress all messages
.TP
\fB\-t\fR, \fB\-\-test\fR
test compressed file integrity
.TP
\fB\-v\fR, \fB\-\-verbose\fR
be verbose (a 2nd \fB\-v\fR gives more)
.SS "These options are ignored when --in-place is in effect:"
.TP
\fB\-\-insize[=\fR<size>]
pre\-allocate and fill inbuf [default 16 KiB]
.TP
\fB\-\-outsize[=\fR<size>]
pre\-allocate outbuf [default 512 MiB]
.TP
\fB\-\-nofill\fR
do not pass a fill function; requires \fB\-\-insize\fR
.TP
\fB\-\-noflush\fR
do not pass a flush function; requires \fB\-\-outsize\fR
.PP
If no file names are given, or if a file is '\-', xlunzip 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...
.PP
To extract all the files from archive 'foo.tar.lz', use the commands
\&'tar \fB\-xf\fR foo.tar.lz' or 'xlunzip \fB\-cd\fR foo.tar.lz | tar \fB\-xf\fR \-'.
.PP
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 xlunzip to panic.
.SH "REPORTING BUGS"
Report bugs to lzip\-bug@nongnu.org
.br
Xlunzip home page: http://www.nongnu.org/lzip/xlunzip.html
.SH COPYRIGHT
Copyright \(co 2020 Antonio Diaz Diaz.
License GPLv2+: GNU GPL version 2 or later <http://gnu.org/licenses/gpl.html>
.br
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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