Check if my machine is 64-bit capable on Linux (Ubuntu)?

linux ubuntu 64-bit 32-bit architecture

9,736

Solution 1

run (as root/sudo)

lshw -class CPU

and look at the Width attribute. If its 64bit, your hardware is capable.

More info here: http://www.basiclinuxcommand.com/lshw/check-cpu-processor-type-information-linux-fedora-using-lshw-command.html

Solution 2

Just to throw a revision of Frank Thomas's answer into the ring. Enter this into your terminal and the answer will be pretty obvious.

lshw -class CPU | grep -i "width"

9,736

Abdullah 0v0

I'm Abdullah, out here in the lands of Egypt at the age of 12 (for any dummies who think I'm travelling to Egypt, I'm Egyptian, I'm also 12 if you noticed). I am, I believe, a guru in C++, developed some projects for Sourceforge in the past, LOVING C++11, just on the edge of my chair for C++14! Learning Haskell, Qt framework and Go (language) now. Expert with JavaScript, PHP and HTML. Trying out Blender for 3D, and multi booting Windows on my Linux Mint 16 laptop for Unity3D (games! yay!) Here's my Stack Overflow account: http://stackoverflow.com/users/3095977/abdullah-0v0

Updated on September 18, 2022

Comments

Abdullah 0v0 over 1 year

Similar to this question, I have a 32-bit OS (Ubuntu), but I want to know if my machine is 64-bit capable... I checked out the question, but the answers are Windows-specific... I also checked this question, but I want to know if it is 64-bit capable, I know my OS is 32-bit.
Thanks, whoever I am
- Cristian Ciupitu almost 10 years
  
  Please include the output of cat /proc/cpuinfo in your question.
- Nullpointer42 almost 10 years
  
  lscpu should work as well . . .
- Panther almost 10 years
  
  Surely this is a duplicate question and has been asked many times. grep ' lm ' /proc/cpuinfo - no output = 32 bit processor. lm = long mode == 64 bit capable and is considered the most relilable flag.
- Cristian Ciupitu almost 10 years
  
  How can I check if my CPU is AMD64 compatible? from Ask Ubuntu.
- AFH almost 10 years
  
  Just a note note of caution: even if your CPU is capable of running a 64-bit OS, it is not always advisable to do so. The Ubuntu site recommends 32-bit Ubuntu if you have less than 2GB of RAM. 64-bit code is always bigger, and any gain in CPU speed is swamped by the degradation if there is increased swapping activity.
punund over 9 years

This should be accepted answer.