#!/usr/bin/env lua

local num, command = ..., table.concat({select(2, ...)}, ' ')

local input do
  if command == '' then
    input = io.stdin
  else
    input = io.popen(command)
  end
end

for i=1,num do
  local input = input:read '*l'
  if input then
    print(input)
  else
    break
  end
end