Linux: Do I have 32 or 64 bit? How to find out

Linux, like other operating systems, has 32-bit and 64-bit versions. In this practical tip you can read which version you have.

32 bit or 64 bit?

To find out whether you have a 32-bit or 64-bit system installed, enter the following command in the console / terminal:

• "getconf LONG_BIT"
• The console then returns the corresponding value. (32 or 64)

The following command also works as an alternative:

• "uname -m"
• If the console returns "i386" or "i686", then you have installed a 32 bit system.
• "x86_64" or "amd64" indicates a 64 bit system.

Does your processor support 64 bit?

As with Windows, for example, a 32-bit operating system can also be installed on a 64-bit system. This is not noticeable in normal operation, but you cannot use the full performance of your PC.

• In contrast to 32-bit systems, 64-bit systems enable more than 4 GB of RAM.
• 64-bit systems can process larger integer values ​​and therefore perform calculations faster.

You can find out whether your computer supports 64-bit in the console with the command:

• "cat / proc / cpuinfo | grep lm"
• This command gives you information about the installed processor. The "grep lm" attachment searches for values ​​that contain "lm". "lm" stands for "Long Mode" and means that the CPU supports 64 bits.
• If no values ​​are displayed with the command, your CPU cannot process 64 bits.