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<b_jonas> slashlearn block device/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.
author HackBot
date Fri, 17 Jun 2016 08:35:50 +0000
parents e72ec4b21b8b
children
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#!/bin/sh
echo "$1" > /tmp/asm.s; for o in ',' '-msyntax=intel -mnaked-reg,-M intel'; do if as ${o%,*} /tmp/asm.s -o /tmp/asm.o 2>>/tmp/asm.err; then objdump ${o#*,} -d --insn-width=20 /tmp/asm.o | sed -e "1,/0000000000000000/d" | perl -pe 'if (/^\s*(\d+:)\s*((?:\w\w )+)\s*(\S.*)$/) { ($a,$b,$c) = ($1,$2,$3); $_ = "$a  $b  ".($c =~ s/\s+/ /rg); }'; exit; fi; done; cat /tmp/asm.err