view wisdom/block device @ 11231:c3d85315f276

<fizzie> ` sed -e \'s|^ ||\' < \'wisdom/fun fact \' > \'wisdom/fun fact\'; rm \'wisdom/fun fact \'
author HackBot
date Wed, 01 Nov 2017 19:38:34 +0000
parents 272663b31668
children
line wrap: on
line source

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.