apt – How to install updates via command line? – Ask Ubuntu https://askubuntu.com/questions/196768/how-to-install-updates-via-command-line
install – .pkg for installer hangs on verify – Ask Different http://apple.stackexchange.com/questions/210642/pkg-for-installer-hangs-on-verify
Display a list of files in package while in Installer – Mac OS X Hints http://hints.macworld.com/article.php?story=20120406092946908
Installing Snow Leopard: What You Need to Know – Business Center – PC World http://www.pcworld.com/businesscenter/article/171028/installing_snow_leopard_what_you_need_to_know.html