[ubuntu] lscpu - (32bit or 64bit)

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http://ubuntuforums.org – i want to know if my cpu hardware is 32bit or 64bit...although i know i have installed 32bit Ubuntu 12.04 version on my system,,, yet i m not sure if my system/cpu is 32bit or 64bit,, as in either case, i could have installed 32bit operating sys on it... 1...when i try to check it by lscpu,, it show CPU op mode both 32bit and 64 bit as shown under...what does this mean???? 2....architecture says i686,,,, what does this mean,, what are other options??what does it show/means???? someone to plz guide in detail nasir@NASIR:~$ lscpu Architecture: i686 CPU op-mode(s): 32-bit, 64-bit (Hardware)