module.exports = function(linesIn, command){
var linesOut = linesIn.slice(0);
var part = command.trim();
var parts = part.split(" ");
var limit = parseInt(parts[1]);
var i = linesOut.length;
while (i--) {
if(i > limit - 1){
linesOut.splice(i, 1);
}
}
return linesOut;
}