Open Terminal. Go to Applications > Accessories > Terminal and type in the following command (or to use copy/paste method): sudo uname –m and hit Enter
- If the response is i686, you have a 32-bit version of Ubuntu.
- If the response is x86_64 for example, you have a 64-bit version of Ubuntu.
Check out other information as needed. You have other commands for other information also, so type those commands or to use copy/paste method to the Terminal:
- sudo uname –s, shows you the kernel name
- sudo uname –n, shows you the network node host name
- sudo uname –r, shows you the kernel release
- sudo uname –v, shows you the kernel version
- sudo uname –m, shows you machine hardware name
- sudo uname –p, shows you the processor type or “unknown”
- sudo uname –i, shows you the hardware platform or “unknown”
- sudo uname –o, shows you the operating system.