d460e8df37
The purpose of LZMA utils is to make the usage of LZMA compression easy on *NIX based systems. The average compression ratio is usually 30% better than 'gzip --best' and 15% better than 'bzip2 --best'. Some files can be compressed even over 50% smaller than with gzip. (read DESCR for more...) thanks to todd@ for testing on 7 archs, and to everyone else who tested. help/ok naddy@, ok alek@, and before the latest tweaks: ok todd@
19 lines
1.0 KiB
Plaintext
19 lines
1.0 KiB
Plaintext
LZMA is an abbreviation of Lempel-Ziv-Markov chain-Algorithm.
|
|
It is the default compression method of 7z file format in 7-zip
|
|
program. The purpose of LZMA utils is to make the usage of LZMA
|
|
compression easy on *NIX based systems like GNU/*/Linux and *BSD.
|
|
|
|
The average compression ratio is usually 30% better than
|
|
'gzip --best' and 15% better than 'bzip2 --best'. Some files can
|
|
be compressed even over 50% smaller than with gzip. With speed
|
|
LZMA cannot compete with gzip in neither compression nor
|
|
decompression. With bzip2 LZMA is in par when compressing with
|
|
approximately same compression ratio but for smallest file size
|
|
the time required can be 5 times the time used by bzip2. Luckily
|
|
the same does not apply to decompression speed: even the tightest
|
|
LZMA files can be decompressed in time less than a half of the
|
|
time that bzip2 would take. This makes LZMA an ideal compression
|
|
tool for distributing files in the Internet and on CDs/DVDs
|
|
because the files are usually compressed only once but
|
|
decompressed many times.
|