CCRemoteShell

local sides = { "top", "bottom", "left", "right",
"front", "back" }
local modemSide = "top";
local protocol = "remoteT";
for i = 1, #sides do
  if peripheral.isPresent(sides[i]) then
    if peripheral.getType(sides[i]) == "modem" then
      print("Modem found.");
      modemSide = sides[i];
      rednet.open(modemSide);
      break
    end
  end
end
if rednet.isOpen(modemSide) then
  print("Now listening for network input.");
  rednet.host(protocol,os.getComputerID().."R")
  Ssender, Smsg, Sprotocol = rednet.receive(protocol);
else
  print("No modem found.");
  return
end
print("command received from "..Ssender);
print("executing in 2 seconds");
sleep(2);
shell.run(Smsg);
os.reboot();