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Diffstat (limited to 'doc/lunzip.1')
| -rw-r--r-- | doc/lunzip.1 | 29 |
1 files changed, 19 insertions, 10 deletions
diff --git a/doc/lunzip.1 b/doc/lunzip.1 index 1198723..f96b431 100644 --- a/doc/lunzip.1 +++ b/doc/lunzip.1 @@ -1,22 +1,22 @@ -.\" DO NOT MODIFY THIS FILE! It was generated by help2man 1.46.1. -.TH LUNZIP "1" "January 2019" "lunzip 1.11" "User Commands" +.\" DO NOT MODIFY THIS FILE! It was generated by help2man 1.47.16. +.TH LUNZIP "1" "January 2021" "lunzip 1.12" "User Commands" .SH NAME lunzip \- decompressor for the lzip format .SH SYNOPSIS .B lunzip [\fI\,options\/\fR] [\fI\,files\/\fR] .SH DESCRIPTION -Lunzip is a decompressor for the lzip format. 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 don't need compression -capabilities. Lunzip is fully compatible with lzip\-1.4 or newer. +Lunzip is a decompressor for the lzip format written in C. Its small size +makes it well suited for embedded devices or software installers that need +to decompress files but don't need compression capabilities. Lunzip is fully +compatible with lzip 1.4 or newer. .PP 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 +with the option \fB\-\-buffer\-size\fR and lunzip will use the decompressed file as dictionary for distances beyond the buffer size. Of course, the -smaller the buffer size used in relation to the dictionary size, the +larger the difference between the buffer size and 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 and is intended for systems without enough memory (RAM + swap) to keep @@ -48,7 +48,7 @@ keep (don't delete) input files print (un)compressed file sizes .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 @@ -72,16 +72,25 @@ Ki = KiB = 2^10 = 1024, M = 10^6, Mi = 2^20, G = 10^9, Gi = 2^30, etc... Buffer sizes 12 to 29 are interpreted as powers of two, meaning 2^12 to 2^29 bytes. .PP +To extract all the files from archive 'foo.tar.lz', use the commands +\&'tar \fB\-xf\fR foo.tar.lz' or 'lunzip \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 lunzip to panic. +.PP +The ideas embodied in lunzip are due to (at least) the following people: +Abraham Lempel and Jacob Ziv (for the LZ algorithm), Andrey Markov (for the +definition of Markov chains), G.N.N. Martin (for the definition of range +encoding), Igor Pavlov (for putting all the above together in LZMA), and +Julian Seward (for bzip2's CLI). .SH "REPORTING BUGS" Report bugs to lzip\-bug@nongnu.org .br Lunzip home page: http://www.nongnu.org/lzip/lunzip.html .SH COPYRIGHT -Copyright \(co 2019 Antonio Diaz Diaz. +Copyright \(co 2021 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. |