Mercurial > repo
view wisdom/block device @ 11237:6df01ef9a417
<shachaf> mkx bin/d1wg//dowg "$@" | head -n1
author | HackBot |
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date | Sat, 04 Nov 2017 01:57:25 +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.