chirppy
par2cmdline
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chirppy | par2cmdline | |
---|---|---|
2 | 28 | |
3 | 673 | |
- | 2.1% | |
1.8 | 0.0 | |
almost 3 years ago | about 2 months ago | |
Python | C++ | |
Apache License 2.0 | GNU General Public License v3.0 only |
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chirppy
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Practical Reed-Solomon for Programmers
Thanks. I have 30 examples I got from the API, many moons ago https://github.com/moreati/chirppy/blob/master/examples.json. My finite field knowledge is not up to solving it analytically, my attempts to brute force it are in https://github.com/moreati/chirppy/blob/master/trials.py. That includes functions to go between the characters, and integer representations.
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Show HN: I made a tool to communicate data using the PC speaker
I made a send-only Python client, back in the day. https://github.com/moreati/chirppy
par2cmdline
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Best archival medium for 3-10 gig video files?
An alternative is including PAR2 files.
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Understanding CD-R and CD-RW (2003) [pdf]
Not only that but if you budget for an expected error rate of let's say 10% you can use par2 to create additional files that add that redundancy to your archives.
https://github.com/Parchive/par2cmdline
- Is this a viable strat to backup while still having some live access to relevant data?
- Par2cmdline is a PAR 2.0 compatible file verification and repair tool
- Tips for Long Term Data storage (20+ years).
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Side-by-side: WinRAR, PeaZip, 7-Zip, WinZip
That's the same reason I do archive files. For parity I personally use (https://github.com/Parchive/par2cmdline) which does create extra files, so I can see how WinRAR would have something to add there.
- Come aggiungere parità a un gruppo di DVD?
- Adding redundancy records to data
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FSArchiver – Filesystem Archiver for Linux
Here's the first example I could find.
https://pthree.org/2014/04/01/protect-against-bit-rot-with-p...
Basically, you take a normal TAR file and creates external parity files that can be used to recover data in the case of bitrot. Something like this would have been great to have on a few data files I had to retrieve from tape that ended up with a bit flip somewhere in the network > disk > tape > disk process.
However, it doesn't look like the program is maintained anymore...
http://parchive.sourceforge.net/
> DISCLAIMER: This project web space is not actively mantained and is presented here for archive purposes. However some project members still montior the project mailings lists if you have questions. (sic)
The last release was in 2004 (Wikipedia says it was active until 2015, but I don't see that).
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Archiver
Check out par2. I don't know personally of an open source one except I used QuickPar for Windows in the distant past. There's also multipar: https://github.com/Yutaka-Sawada/MultiPar and parchive: https://github.com/Parchive/par2cmdline
What are some alternatives?
ggwave - Tiny data-over-sound library
par2deep - Produce, verify and repair par2 files recursively.
amodem - Audio MODEM Communication Library in Python
dwarfs - A fast high compression read-only file system for Linux, Windows and macOS
quietnet - Simple chat program that communicates using inaudible sounds
NanaZip - The 7-Zip derivative intended for the modern Windows experience
fast-lzma2 - Fast LZMA2 Library
Squirrel - An installation and update framework for Windows desktop apps
zpaqfranz - Deduplicating archiver with encryption and paranoid-level tests. Swiss army knife for the serious backup and disaster recovery manager. Ransomware neutralizer. Win/Linux/Unix
par3cmdline - Official repo for par3cmdline and par3lib
p7zip - A new p7zip fork with additional codecs and improvements (forked from https://sourceforge.net/projects/sevenzip/ AND https://sourceforge.net/projects/p7zip/).
MultiPar - Parchive tool