For all the crap we give Microsoft about their operating systems I have to give them one thing- backwards compatibility. I know it comes at a price. However in the rare situation like when I had to load Lotus Organizer from 1997 on a 64bit version of Windows 7….and it worked. You gotta give them some credit!
I don’t always remember how to find this out so here it is:
# cat /proc/version
You could also do:
# uname -a