How to Check Whether a Linux PC Is 64-bit or 32-bit by Command

This updated guide examines How to Check Whether a Linux PC Is 64-bit or 32-bit by Command and organizes the essential facts, background, and practical takeaways in clear American English.

What are the differences between 64-bit and 32-bit Linux systems?

64-bit systems can handle more data than 32-bit systems. But for efficient management, a supported operating system can communicate with the hardware. Therefore, there are 32-bit and 64-bit Linux distro versions. A 32-bit Linux distribution can be installed on a 64-bit version, but the opposite is not possible. Most modern computers are usually 64-bit systems.

Check CPU version on Linux PC

Step 1 : Launch the Terminal.

Step 2 : Type the following command and pressEnter.

lscpu

The 'ls' in the above command stands for 'list' and cpu is the CPU. Therefore, the command can be interpreted as 'listing CPU details'.

You should see output similar to the following:

kiran@fosslinux:~$ lscpu Architecture: x86_64 CPU op-mode(s): 32-bit, 64-bit Byte Order: Little Endian CPU(s): 4 On-line CPU(s) list: 0-3 Thread(s) per core: 2 Core(s) per socket: 2 Socket(s): 1 NUMA node(s): 1 Vendor ID: GenuineIntel CPU family: 6 Model: 69 Model name: Intel(R) Core(TM) i7-4500U CPU @ 1.80GHz

Note the CPU op-mode (s) , this value indicates whether the hardware supports 32-bit and 64-bit.

Check the Linux distro version

Now that you know the type of hardware, you might want to know whether the current Linux distribution on your system is 32-bit or 64-bit. We will determine using both the command line and the GUI.

GUI

In the search box for Linux distribution programs, look for 'About', 'System Info' or 'Details'. Below is an example from Ubuntu 17.10, showing the type of operating system.

Command line

Launch Terminal and use the uname command as follows:

uname -a

Output:

kiran@fosslinux:~$ uname -a Linux fosslinux 4.13.0-32-generic #35-Ubuntu SMP Thu Jan 25 09:13:46 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux

If you see x86_64, it means that the currently running distribution is 64-bit. In addition, it will list the computer name and the Linux Kernel version.