ping with line numbers

The nl command adds line numbers to its input, so you can pipe the output of ping to nl.

% ping -c3 google.com | nl
     1  PING google.com (74.125.224.105) 56(84) bytes of data.
     2  64 bytes from nuq04s08-in-f9.1e100.net (74.125.224.105): icmp_req=1 ttl=55 time=31.2 ms
     3  64 bytes from nuq04s08-in-f9.1e100.net (74.125.224.105): icmp_req=2 ttl=55 time=14.8 ms
     4  64 bytes from nuq04s08-in-f9.1e100.net (74.125.224.105): icmp_req=3 ttl=55 time=16.3 ms

     5  --- google.com ping statistics ---
     6  3 packets transmitted, 3 received, 0% packet loss, time 2002ms
     7  rtt min/avg/max/mdev = 14.851/20.833/31.286/7.417 ms