Your linoleum floors are dull How can you get the shine back?

go to your local flooring store or hardware store...and ask for a vinyl flooring 'stripper' it will clean your floor very well..then you have to re-wax it to get the shine back..(personal advice...my husband installs flooring for a living..I do it on my hands and knees..not with a mop..follow the directions on the stripper, then be positive to use a very good wax to reshine the floor)