If you need to know some basics about the operating system you’re running on your computer, without leaving a terminal, you are at the right address.
1. “uname” command, which prints system information to the screen. Open the terminal and run the command:
~$ uname –a
The you will see listing which shows whether your system is 32-bit (“i686” or “i386”) or 64-bit (“x86_64”).
2. The next command is more specific:
~$ uname –m
This displays only the machine hardware name and indicates, as above, whether your system is 32-bit (“i686” or “i386”) or 64-bit (“x86_64”).
3. The “arch” command is similar to the “uname -m” command and prints to the screen whether your system is 32-bit (“i686”) or 64-bit (“x86_64”)
If you would rather use a graphical tool to find out whether your system is 32-bit or 64-bit, you can use the “System Settings.”