Linux Certif

Toute la documentation sur la certification Linux LPI

paq8l

NAME

paq8l - file compressor and archiver

SYNOPSIS

paq8l [-N] file1 [file2...] [dir]
paq8l [-d] file1.paq8l [dir2]

DESCRIPTION

Paq8l is one of a series of open source data compression archivers that have evolved through collaborative development to top rankings on several benchmarks measuring compression ratio (although at the expense of speed and memory usage). The paq compressors use context mixing: a large number of models estimate the probability that the next bit of data will be a 0 or 1. These predictions are combined and arithmetic coded (similar to PPM). In paq6, predictions are combined by weighted averaging, then adjusting the weights to favor the most accurate models. Paq7 and later differ mainly in that model predictions are combined using a neural network rather than by weighted averaging.

OPTIONS

-N

This option specifies a compression level ranging from -0 (fastest) to -8 (smallest). The default is -5.

-d

Is used when decompressing.

NOTES

The compressed output file is named by adding ".paq8l" extension to the first named file (file1.paq8l).

Entering paq8l without an argument will display a short help.

SEE ALSO

/usr/share/doc/paq8l/readme.txt