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Merging upstream version 0.6.

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Signed-off-by: Daniel Baumann <daniel@debian.org>
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Daniel Baumann 2025-02-17 22:51:44 +01:00
parent e39d8907e0
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Signed by: daniel
GPG key ID: FBB4F0E80A80222F
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doc/xlunzip.1
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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"
.TH XLUNZIP "1" "June 2020" "xlunzip 0.6" "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.
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.
The distributed index feature of the lzip format allows xlunzip to
decompress concatenated files in place. This can't be guaranteed to work
with formats like gzip or bzip2 because they can't detect whether a high
compression ratio in the first members of the multimember data is being
masked by a low compression ratio in the last members.
.SH OPTIONS
.TP
\fB\-h\fR, \fB\-\-help\fR
@ -46,7 +45,7 @@ decompress or test using only one buffer
keep (don't delete) input files
.TP
\fB\-o\fR, \fB\-\-output=\fR<file>
if reading standard input, write to <file>
write to <file>, keep input files
.TP
\fB\-q\fR, \fB\-\-quiet\fR
suppress all messages