It seems like all I do is complain about my frustrations with computers so I thought I should post a positive comment for a change.
I went to check what version of g++ I had on my Ubuntu on Parallels. Here's what I got:
andrew@MacMini-Ubuntu:~$ g++ --version
The program 'g++' can be found in the following packages:
Try: sudo apt-get install <selected>
bash: g++: command not found
This is a vast improvement over just "command not found". Thumbs up to Ubuntu (or Linux or wherever this originated).