Downloads the latest Intel HD Graphics driver from OSX combo update

intel.sh

#!/bin/bash

URL="http://support.apple.com/downloads/DL1760/en_US/OSXUpdCombo10.9.5.dmg"

if [[ ! -f /tmp/OSXUpdCombo10.9.5.dmg ]]; then
	echo 'Downloading 10.9.5 Combo...'
	curl -Lo /tmp/OSXUpdCombo10.9.5.dmg $URL
fi

if [[ ! -d /tmp/ComboMount ]]; then
	mkdir /tmp/ComboMount
fi

echo 'Mounting combo image...'
hdiutil attach -nobrowse -noverify -mountpoint /tmp/ComboMount /tmp/OSXUpdCombo10.9.5.dmg

echo 'Expanding install package...'
pkgutil --expand /tmp/ComboMount/OSXUpdCombo10.9.5.pkg /tmp/ComboExpanded

echo 'Expanding payload...'
KEXTDIR="System/Library/Extensions"
KEXT="$KEXTDIR/AppleIntelFramebufferCapri.kext"

cd /tmp/ComboExpanded/OSXUpdCombo10.9.5.pkg/
bunzip2 Payload
cpio -ivd $KEXT < Payload.out

if [[ "$1" == "-c" ]]; then
	echo 'Copying kext [sudo required] ...'
	sudo nvram boot-args=kext-dev-mode=1
	sudo mv /$KEXT /$KEXT.old
	sudo cp -Rp $KEXT /$KEXT
	sudo chmod -R 755 /$KEXT
	sudo chown -R root:wheel /$KEXT
	sudo touch /$KEXTDIR

	echo 'Clear kernelcache...'
	sudo rm /System/Library/Caches/com.apple.kext.caches/Startup/kernelcache
else
	echo 'Copying to desktop...'
	cp -Rp $KEXT "$HOME/Desktop/AppleIntelFramebufferCapri.kext"
fi

echo 'Cleanup...'
rm -R /tmp/ComboExpanded
hdiutil detach /tmp/ComboMount