rednet.open("right")

local client

function split(s)
  local t = {}
  for v in string.gmatch(s,"[^%s]+") do
    t[#t+1]=v
  end
  return t
end

while true do
  local id,msg = rednet.receive()
  local cmd,args=string.gmatch(msg,"(.-) (.*)$")()

  if args then
    args=split(args)
    print(args[1])
    ret = shell.run(cmd,unpack(args))
  else
    ret = shell.run(cmd)
  end
  rednet.send(id,tostring(ret))
  rednet.send(id,"end")
end

rednet.close("right")