ping — send ICMP ECHO_REQUEST to network hostsSummary :
Packet InterNet Groper uses the ICMP protocol’s mandatory ECHO_REQUEST datagram to get an ICMP ECHO_RESPONSE from a host or gateway to find whether it is alive or not. See http://ftp.arl.mil/~mike/ping.html Example:
$ ping localhost -- Resolve the IP for localhost and Ping it. $ ping 127.0.0.1 -- Ping for IP 127.0.0.1 $ ping -a host -- Bell after every successful ping. $ ping -b 192.168.1.255 -- Ping the broadcast IP. $ ping -c 6 host -- Stop after sending 6 ECHO_REQUEST packets. # ping -f host -- Flood ping. Packets will generated with Zerointer packet time. $ ping -i 5 host -- Wait 5 seconds between sending each packet. $ ping -q host -- Quiet Mode. Only shows initial and end summary. $ ping -R host -- Record and print the route used by the packets. $ ping -s 100 host -- Sent 100 bytes ICMP packet. Default 56 bytes. $ ping -w 5 host -- Ping for 5 Sec and Exit.
Read: man ping