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Comment on What are some FOSS programs that are objectively better than their proprietary counterparts?

adarza@lemmy.ca ⁨3⁩ ⁨weeks⁩ ago

rar has recovery records. i know it’s a somewhat niche feature, one far more popular in the ‘olden days’ especially in certain uh… ‘venues’… but it’s something i’ve always used when making backups with it.

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null_dot@lemmy.dbzer0.com ⁨3⁩ ⁨weeks⁩ ago
you can make par2 parity data for 7z using the par2 util.

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acockworkorange@mander.xyz ⁨3⁩ ⁨weeks⁩ ago
Tell me more.

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- Scrollone@feddit.it ⁨3⁩ ⁨weeks⁩ ago
  Files shared on Usenet (which may violate piracy laws) are usually packed in the rar format
  
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  - acockworkorange@mander.xyz ⁨3⁩ ⁨weeks⁩ ago
    In sorry I sold have specified. I’m curious about the recovery feature.
    
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    arkanoid@lemmy.ca ⁨3⁩ ⁨weeks⁩ ago
    It essentially splits the archive into multiple rar sub-files (*.r00, *.r01, etc.) and then creates several more chunks that contain parity information (par2 files) that go with it. By doing so, if you then lose *.r45 but get *.r00-r99 you can recover the *.r45 file from the parity (par2) data. It’s pretty slick.
    
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