Pues resulta que me he instalado un ubuntu de DVD, pero da la casualidad que no se si me ha instlado la version de 32 o 64 bits.
Hay algun comando o algun truquillo para saberlo?
Y citando el texto donde se contesta específicamente la pregunta formulada
Similarly, Microsoft began using "x64" as a vendor-neutral way to refer to products that support both AMD64 and EM64T. Other companies, such as Sun Microsystems, have also adopted this convention.