#Lunzip vs lzip archive#
#Lunzip vs lzip software#
#Lunzip vs lzip free#

Maybe the fair thing to do is to compare hardware acceleration with The case of lzip, the CRC calculation takes about 10-19% of the totalĭecompression time (depending on dictionary size and compression ratio). Take into account that busybox, gzip and lzip use the classical SarwateĪlgorithm because it is simple, safe, and runs on all architectures. Of lunzip vs busybox unxz, enabling crc in unxz (by using xz with crc32) I can cite your own lzip benchmark, when comparing uncompression peformance For compression the speed gain is even smaller. So, even if you accelerate it, the total speed gain is small. Mozilla/5.0 (X11 U Linux i586 en-US rv:1.9.1.19) Gecko/20110420 SeaMonkey/2.0.14īut calculating the CRC is just a small part of the total decompression WARRANTY, to the extent permitted by law.Re: Selection of CRC32 Polynomial for lzip

#Lunzip vs lzip free#

This is free software: you are free to change and redistribute it. REPORTING BUGS ¶Ĭopyright © 2022 Antonio Diaz Diaz. Range encoding), Igor Pavlov (for putting all the above together in LZMA),Īnd Julian Seward (for bzip2's CLI). (for the definition of Markov chains), G.N.N. People: Abraham Lempel and Jacob Ziv (for the LZ algorithm), Andrey Markov The ideas embodied in lunzip are due to (at least) the following

Invalid input file, 3 for an internal consistency error (e.g., bug) which (file not found, invalid flags, I/O errors, etc), 2 to indicate a corrupt or

#Lunzip vs lzip archive#

To extract all the files from archive '', use theĬommands 'tar -xf ' or 'lunzip -cd | tarĮxit status: 0 for a normal exit, 1 for environmental problems Powers of two, meaning 2^12 to 2^29 bytes.

If no file names are given, or if a file is '-', lunzipĭecompresses from standard input to standard output.

buffer-size= set output buffer size in bytes -v, -verbose be verbose (a 2nd -v gives more) -loose-trailing allow trailing data seeming corrupt header output= write to, keep input files -q, -quiet suppress all messages -t, -test test compressed file integrity -u, decompress decompress (this is the default) -f, -force overwrite existing output files -k, -keep keep (don't delete) input files -l, -list print (un)compressed file sizes -o, trailing-error exit with error status if trailing data -c, -stdout write to standard output, keep input files -d, OPTIONS ¶ -h, -help display this help and exit -V, -version output version information and exit -a, Intended for systems without enough memory (RAM + swap) to keep the wholeĭictionary at once. 'low memory' mode only works when decompressing to a regular file and is More accesses to disk are needed and the slower the decompression is. Larger the difference between the buffer size and the dictionary size, the With the option -buffer-size and lunzip will use the decompressedįile as dictionary for distances beyond the buffer size. To activate it, specify the size of the output buffer Using as little memory as 50 kB, irrespective of the dictionary size used toĬompress the file. Lunzip provides a 'low memory' mode able to decompress any file Lunzip is fully compatible with lzip 1.4 or newer. That need to decompress files but don't need compression capabilities.

#Lunzip vs lzip software#

Small size makes it well suited for embedded devices or software installers Lunzip is a decompressor for the lzip format written in C. Lunzip - decompressor for the lzip format SYNOPSIS ¶