Mercurial > repo

view wisdom/block device @ 10254:5a6e97c9566d

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
<oerjan> sled bin/?//3itopic1=$(echo \'`\'"$topic" | sed "s/^``//")
author HackBot
date Wed, 15 Feb 2017 01:16:34 +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.