Determining whether a given Linux is 32 bit or 64 bit

Question

So, I typed uname -a, it gave the following output.

Linux mars 2.6.9-67.0.15.ELsmp #1 SMP Tue Apr 22 13:50:33 EDT 2008 i686 i686 i386 GNU/Linux

How should I determine if the given OS is 32 or 64 bit?

Answer 1

try this.

getconf LONG_BIT

Output:

• 32, if OS is 32 bit
• 64, if OS is 64 bit