HOW TO KNOW YOU ARE RUNNING A 32-BIT OR 64-BIT UBUNTU?

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If you have forgot what bit version of Ubuntu you are running.

There is a nice and simple command line program called uname that tells the current bit version


Open Terminal.

Type 

uname -m 

in terminal and hit enter.

• If the response is i686, you have a 32-bit version of Linux.
• If the response is x86_64, you have a 64-bit version of Linux.

If you want to know more details like Kernel version, Time stamp etc..

Try  

uname -a