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How to determine whether I run a 32bit or 64bit Ubuntu install

I typed uname -a in a terminal and I got the following output.

Is it 32 bit or 64 bit?

Linux my-laptop 2.6.32-24-generic-pae

# 43-Ubuntu SMP Thu Sep 16 15:30:27 UTC 2010 i686 GNU/Linux

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marked as duplicate by studiohack Feb 17 '12 at 16:09

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1 Answer 1

up vote 7 down vote accepted

32bit.

With a 64 bit platform you'd have seen x86_64 instead of i686.

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Thats true. Mine outputs: Linux blaze 2.6.32-24-generic #42-Ubuntu SMP Fri Aug 20 14:21:58 UTC 2010 x86_64 GNU/Linux –  Matt H Sep 20 '10 at 0:24

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