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how to know whether my linux system is 32 bit or 64 bit ?

Generally, during any software installation, one gets puzzled regarding the system architecture i.e., whether the PC/desktop is 32 bit or 64 bit build...

Simplest way to know is here.

Step1: Open the terminal.

Step 2: type uname -a
Result for 32-bit Ubuntu:
Linux discworld 2.6.38-8-generic #42-Ubuntu SMP Mon Apr 11 03:31:50 UTC 2011 i686 i686 i386GNU/Linux
whereas the 64-bit Ubuntu will show:
Linux discworld 2.6.38-8-generic #42-Ubuntu SMP Mon Apr 11 03:31:50 UTC 2011 x86_64 x86_64x86_64 GNU/Linux

Identify whether it is i386 or x86_64; correspondingly it is 32 bit or 64 bit build architecture, respectively.


Note: There are many other alternative ways in Linux, to determine the system architecture; but, this is probably the simplest way.
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