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 isĀ  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!