Find Linux OS is 32 or 64bit.

There are several situations where you need to confirm whether your Linux OS installed  is 32bit or 64bit. People normally use uname -a to find it. But the following command will tell you exactly the machine   architecture.

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getconf LONG_BIT

getconf utility shall conform to the Base Definitions volume of IEEE Std 1003.1-2001, Section 12.2, Utility  Syntax.


[root@localhost ~]# getconf LONG_BIT
[root@localhost ~]#

My machine is 32bit.