Mercurial > repo
view wisdom/block device @ 11260:c094d07815e0
<oerjan> le/rn this//This is something people on the channel like to talk about. We\'re often unsure what this is, though.
author | HackBot |
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date | Sat, 09 Dec 2017 11:45:42 +0000 |
parents | 272663b31668 |
children |
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Block devices are a concession made in Unix to make raw hard disks and magnetic tape have a similar interface to regular files and terminals. Since magnetic tapes can't write individual bytes, only entire blocks, the interface isn't exactly the same, thus the dreaded dd obs= option was born.