Forgot whether 32bit or 64bit is installed ...

[klytu]

I installed Ubuntu 11.04 on a flash drive for testing and use on a netbook. I'm embarrassed to say that I forgot whether the version I installed is 32bit or 64bit. Is there a simple way to determine this? I've tried both

cat /etc/lsb-release

for the Ubuntu version and

uname -r

for the running kernal, but neither command tells me whether I'm running 32bit or 64bit.

[howefield]

Try

uname -a

If you see x86_64 in the output, you have a 64 bit installation eg,

Linux natty-desktop 2.6.38-11-generic #48-Ubuntu SMP Fri Jul 29 19:02:55 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux

[haqking]

Try

uname -a

If you see x86_64 in the output, you have a 64 bit installation eg,

Linux natty-desktop 2.6.38-11-generic #48-Ubuntu SMP Fri Jul 29 19:02:55 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux

+1 also see:

uname -m

as it iis a little clearer as it is more specific

[klytu]

Thanks, howefield and haqking! Just what I needed.