How-to: Find out Ubuntu/Linux architecture, 32 or 64 bits?

Appendix I) Find out what is your Ubuntu Architecture (32 or 64 bits)

Open a terminal window (Applications > Accessories > Terminal) and type  “uname -m”

This will give you a number, these codes are called CPU-architectures, and can be translated as follows:

i386 or i686 or X86 –  32 bit systems

x86_ 64 – 64 bit systems

(If you want to learn more, just google it)