Making this repo readonly as libzpaq is no longer maintained.
A good alternative is Kanzi
mzpq compresses files using the ZPAQ compression library. The command-line options are deliberately very similar to those of gzip/bzip2/xz/zstd, but they are not identical. In general mzpq will achive very high compression, at the cost of memory and speed.
zpaq is a journaling archiver written by Matt Mahoney. The command line for zpaq is suited for creating encrypted, deduplicated, compressed, incremental archives and backups. mzpq uses the same compression library, but with a simpler command line interface for compression only. zpaq can still extract compressed files created by mzpq.
'm' in mzpq means micro/mini/minimalistic/... 'a' has been stripped off, as it is not an archiver like zpaq.
Currently file attributes are not preserved.
No Warranty. Use at your own risk. Make backups.
Build:
make
Install:
sudo make install
Examples usage
Help:
mzpq -h
Compress a file:
mzpq -7 syslog.log
Use advanced compression method, see libzpaq.h for details:
mzpq -mx6.3ci1 *.log
Read from standard in, compress and redirect to a compressed file:
cat syslog.log | mzpq -3c > syslog.log.zpq
Compressing enwik8, the first 108 bytes of the English Wikipedia dump on Mar. 3, 2006.
All compressors were used with the default compression level.
| Compressor | comp size (bytes) | comp time (s) | decomp time (s) |
|---|---|---|---|
| - | 1000000000 | - | - |
| lz4 -1 | 57285984 | 0.35 | 0.13 |
| gzip -6 | 36518329 | 4.73 | 0.71 |
| zstd -3 | 35626935 | 0.72 | 0.22 |
| bzip2 -9 | 29008758 | 7.59 | 3.45 |
| xz -6 | 26375764 | 65.59 | 1.51 |
| PPMd -m10 -o4 | 26275353 | 6.52 | 7.11 |
| mzpq -4 | 21979813 | 85.01 | 87.66 |
| mzpq -9 | 19136943 | 254.64 | 268.73 |
Note: '-4' is the default compression level for mzpq, '-9' is the maximum.
mzpq is released to the public domain.
zpaq is written by Matt Mahoney and released to the public domain. It includes code from libdivsufsort 2.0 (C) Yuta Mori, 2003-2008, MIT license, public domain code for AES from libtomcrypt by Tom St Denis and public domain code for salsa20 by D. J. Bernstein.