Mercurial > repo

view wisdom/block device @ 9295:8d2b73b8d21f

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
<hppavilion[1]> learn Logic is just another tool that the true scotsMan uses to keep you down.
author HackBot
date Sun, 16 Oct 2016 07:13:36 +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.