How to know your ubuntu is 64 bit or 32 bit

When you want to install a package in ubuntu,you always need to select between 64-bit and 32-bit package for your system.If you’ve no idea with it .Here’s an easy way to tell your ubuntu is  64-bit or 32-bit .

Openup a teminal window and run following command:

uname -ar

If your ubuntu is 64-bit(amd64),you’ll see the keyword x86_64

Other way,you ubuntu is 32-bit(i386) operating system.Just so easy!

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