87 lines
2.7 KiB
Groff
87 lines
2.7 KiB
Groff
.\" DO NOT MODIFY THIS FILE! It was generated by help2man 1.46.1.
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.TH PDLZIP "1" "May 2015" "pdlzip 1.6" "User Commands"
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.SH NAME
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pdlzip \- reduces the size of files
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.SH SYNOPSIS
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.B pdlzip
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[\fI\,options\/\fR] [\fI\,files\/\fR]
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.SH DESCRIPTION
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Pdlzip \- A "public domain" version of the lzip data compressor
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also able to decompress legacy lzma\-alone (.lzma) files.
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Lzma\-alone is a very bad format. If you keep any lzma\-alone files, it is
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advisable to recompress them to lzip format.
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.SH OPTIONS
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.TP
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\fB\-h\fR, \fB\-\-help\fR
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display this help and exit
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.TP
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\fB\-V\fR, \fB\-\-version\fR
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output version information and exit
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.TP
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\fB\-c\fR, \fB\-\-stdout\fR
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send output to standard output
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.TP
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\fB\-d\fR, \fB\-\-decompress\fR
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decompress
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.TP
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\fB\-f\fR, \fB\-\-force\fR
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overwrite existing output files
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.TP
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\fB\-F\fR, \fB\-\-recompress\fR
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force re\-compression of compressed files
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.TP
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\fB\-k\fR, \fB\-\-keep\fR
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keep (don't delete) input files
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.TP
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\fB\-m\fR, \fB\-\-match\-length=\fR<bytes>
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set match length limit in bytes [36]
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.TP
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\fB\-o\fR, \fB\-\-output=\fR<file>
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if reading stdin, place the output into <file>
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.TP
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\fB\-q\fR, \fB\-\-quiet\fR
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suppress all messages
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.TP
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\fB\-s\fR, \fB\-\-dictionary\-size=\fR<bytes>
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set dictionary size limit in bytes [8 MiB]
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.TP
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\fB\-t\fR, \fB\-\-test\fR
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test compressed file integrity
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.TP
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\fB\-v\fR, \fB\-\-verbose\fR
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be verbose (a 2nd \fB\-v\fR gives more)
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.TP
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\fB\-1\fR .. \fB\-9\fR
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set compression level [default 6]
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.TP
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\fB\-\-fast\fR
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alias for \fB\-1\fR
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.TP
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\fB\-\-best\fR
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alias for \fB\-9\fR
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.PP
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If no file names are given, pdlzip compresses or decompresses
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from standard input to standard output.
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Numbers may be followed by a multiplier: k = kB = 10^3 = 1000,
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Ki = KiB = 2^10 = 1024, M = 10^6, Mi = 2^20, G = 10^9, Gi = 2^30, etc...
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The bidimensional parameter space of LZMA can't be mapped to a linear
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scale optimal for all files. If your files are large, very repetitive,
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etc, you may need to use the \fB\-\-match\-length\fR and \fB\-\-dictionary\-size\fR
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options directly to achieve optimal performance. For example, \fB\-9m64\fR
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usually compresses executables more (and faster) than \fB\-9\fR.
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.PP
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Exit status: 0 for a normal exit, 1 for environmental problems (file
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not found, invalid flags, I/O errors, etc), 2 to indicate a corrupt or
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invalid input file, 3 for an internal consistency error (eg, bug) which
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caused pdlzip to panic.
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.SH "REPORTING BUGS"
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Report bugs to lzip\-bug@nongnu.org
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.br
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Pdlzip home page: http://www.nongnu.org/lzip/pdlzip.html
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.SH COPYRIGHT
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Copyright \(co 2015 Antonio Diaz Diaz.
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Public Domain 2009 Igor Pavlov.
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License 2\-clause BSD.
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.br
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This is free software: you are free to change and redistribute it.
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There is NO WARRANTY, to the extent permitted by law.
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