From e2dddc542aa3b5d49c2f8f76b8467cd52c77d6a8 Mon Sep 17 00:00:00 2001
From: Izaya <redtailedairways@gmail.com>
Date: Wed, 25 Jul 2018 21:05:50 +1000
Subject: [PATCH] added a ping util

---
 util/OpenOS/usr/bin/ping.lua | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)
 create mode 100644 util/OpenOS/usr/bin/ping.lua

diff --git a/util/OpenOS/usr/bin/ping.lua b/util/OpenOS/usr/bin/ping.lua
new file mode 100644
index 0000000..922a433
--- /dev/null
+++ b/util/OpenOS/usr/bin/ping.lua
@@ -0,0 +1,20 @@
+local net = require "net"
+local computer = require "computer"
+local event = require "event"
+
+local tArgs = {...}
+local addr = tArgs[1]
+local times = tonumber(tArgs[2]) or 5
+local wait = tonumber(tArgs[3]) or 30
+
+for i = 1, times do
+ local ipt = computer.uptime()
+ local pid = net.genPacketID()
+ computer.pushSignal("net_send",1,tArgs[1],0,"ping",pid)
+ local t,a = event.pull(wait,"net_ack",pid)
+ if t == "net_ack" and a == pid then
+  print("Ping reply: "..tostring(computer.uptime()-ipt).." seconds.")
+ else
+  print("Timed out.")
+ end
+end