Alternate eGPU script

#!/bin/sh
personalities=("ATI\ Support" Controller AMDBaffinGraphicsAccelerator)
kexts=(AMDSupport AMD9510Controller AMDRadeonX4100)
for (( i=0; i < 3; i++ ))
do
personality="Add :IOKitPersonalities:"${personalities[$i]}":IOPCITunnelCompatible bool true"
plist="/System/Library/Extensions/"${kexts[$i]}".kext/Contents/Info.plist"
/usr/libexec/PlistBuddy -c "$personality" "$plist" 2>/dev/null
done
rm /Volumes/Macintosh\ HD/System/Library/PrelinkedKernels/prelinkedkernel 2>/dev/null
rm /Volumes/Macintosh\ HD/System/Library/Caches/com.apple.kext.caches/Startup/kernelcache 2>/dev/null
touch /System/Library/Extensions
kextcache -update-volume /Volumes/Macintosh\ HD