Updating GCC for C++ 11

I will write up a more detailed blog post on this topic soon, but I wanted to share this:

In a blog post from 2011, Stephane Charette detailed how to determine which version of gcc you are using and how to easily update and switch between versions. (The standard version of gcc included in Ubuntu 12.04 does not support C++ 11). After spending two days thrashing following various official wikis, his blog post was a miraculous!