First open a shell and make your self root
$ sudo su -Then navigate to launch map
# cd /Library/LaunchDaemonsNow Unload the correct services
# launchctl unload com.avast.daemon.plist# launchctl unload com.avast.fileshield.plist# launchctl unload com.avast.kexts.plist# launchctl unload com.avast.proxy.plist# launchctl unload com.avast.proxy.plist
Finally remove residu
rm -i /Library/LaunchDaemons/com.avast.*rm -i /Library/LaunchAgents/com.avast.*