Feel smarter than your router in 60 seconds.

The 'ping' command on most flavors of Unix has a nifty little feature that lets you select which port to ping on. It's handy when troubleshooting network applications. For example, if some wierd app.

“Ping,” a command that was designed – and used for many years – to confirm communication with and/or round-trip latency to an IP address or URL, has become much less useful. And this is really a shame ...