[TwinCLinG] Linux version 64 bit/ 32 bit

[mathewcos]

Hi,

   Is there any linux version like 32bit/64 bit? How to identify the 
Linuc version is 32 bit or 64 bit?

#uname -a
Linux NUCCHDB03 2.6.9-5.ELsmp #1 SMP Wed Jan 5 19:30:39 EST 2005 i686 
i686 i386 GNU/Linux

Regards,
Mathew