Fping – A tool to quickly ping N number of hosts to determine their reachability without flooding the network. fping is different from ping in that you can specify any number of hosts on the command line, or specify a file containing the lists of hosts to ping. Instead of trying one host until it timeouts or replies, fping will send out a ping packet and move on to the next host in a round-robin fashion. If a host replies, it is noted and removed from the list of hosts to check. If a host does not respond within a certain time limit and/or retry limit it will be considered unreachable. Unlike ping, fping is meant to be used in scripts and its output is easy to parse.
fping [options] [targets...]
-a show targets that are alive -A show targets by address -b n amount of ping data to send, in bytes (default 56) -B f set exponential backoff factor to f -c n count of pings to send to each target (default 1) -C n same as -c, report results in verbose format -D print timestamp before each output line -e show elapsed time on return packets -f file read list of targets from a file ( - means stdin) (only if no -g specified) -g generate target list (only if no -f specified) (specify the start and end IP in the target list, or supply a IP netmask) (ex. fping -g 192.168.1.0 192.168.1.255 or fping -g 192.168.1.0/24) -H n Set the IP TTL value (Time To Live hops) -i n interval between sending ping packets (in millisec) (default 25) -l loop sending pings forever -m ping multiple interfaces on target host -n show targets by name (-d is equivalent) -p n interval between ping packets to one target (in millisec) (in looping and counting modes, default 1000) -q quiet (don't show per-target/per-ping results) -Q n same as -q, but show summary every n seconds -r n number of retries (default 3) -s print final stats -I if bind to a particular interface -S addr set source address -t n individual target initial timeout (in millisec) (default 500) -T n ignored (for compatibility with fping 2.4) -u show targets that are unreachable -O n set the type of service (tos) flag on the ICMP packets -v show version targets list of targets to check (if no -f specified)
cyborg@cyborg:~$ fping www.ztrela.com www.facebook.com www.ztrela.com is alive www.facebook.com is alive