#!/usr/bin/env ruby

=begin Linux, argument selector for the comand ls to list files =end

puts "Which argument do you want to use for the command ls ?:"
argument = gets


#system("ls -l > result.txt")  <------- here the same idea but with -l argument this works great

#now i'm trying to use a var to select diferent argument -l, -a and others, but this don'r work for me , don't save nothing in result.txt :'(, sorry my english realy sux x)

system("ls #{argument} > result.txt")