Some times you need to find out what version is your Linux OS. Just like when I need to download a module, I have to find out which one is right for my OS. Then I can download 32bit, or 64bit package.
The most common way to find your Linux installation is enter the following shell command.
uname -a
or
uname -m
i386 => 32bits, x86_64 => 64bits
