fping

Ping is one of the most useful tools to test network connectivity, sometimes it is the first step for troubleshooting and getting the "!" (if you work on Cisco devices) can be a big satisfaction.

I use ping on daily basis and sometimes I need some features that the basic ping command  lacks. The solution? FPING

Of all the features of fping my favorite is " -b : beep on every successful reply (- to beep on timeout)". When I reload a device I can just wait for fping to beep instead of keeping a window on the screen with "ping -t".