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fping  

fping程序类似ping,也是通过发送ICMP包协议回复请求检测主机是否存在，不过fping可以在命令行中指定要ping的主机数量范围，也可以指定含有要ping的主机列表文件。fping可以实现多主机同ping,当指定的主机被ping通时，就会从待ping主机列表中移除，当指定主机未ping通时，系统会先放置等待后续进一步指令。以下是fping指令

Probing options:

1. -4, --ipv4 only ping IPv4 addresses
2. -6, --ipv6 only ping IPv6 addresses
3. -b, --size=BYTES amount of ping data to send, in bytes (default: 56)
4. -B, --backoff=N set exponential backoff factor to N (default: 1.5)
5. -c, --count=N count mode: send N pings to each target
6. -f, --file=FILE read list of targets from a file ( - means stdin)
7. -g, --generate generate target list (only if no -f specified)
8. (give start and end IP in the target list, or a CIDR address)
9. (ex. fping -g 192.168.1.0 192.168.1.255 or fping -g 192.168.1.0/24)
10. -H, --ttl=N set the IP TTL value (Time To Live hops)
11. -I, --iface=IFACE bind to a particular interface
12. -l, --loop loop mode: send pings forever
13. -m, --all use all IPs of provided hostnames (e.g. IPv4 and IPv6), use with -A
14. -M, --dontfrag set the Don‘t Fragment flag
15. -O, --tos=N set the type of service (tos) flag on the ICMP packets
16. -p, --period=MSEC interval between ping packets to one target (in ms)
17. (in loop and count modes, default: 1000 ms)
18. -r, --retry=N number of retries (default: 3)
19. -R, --random random packet data (to foil link data compression)
20. -S, --src=IP set source address
21. -t, --timeout=MSEC individual target initial timeout (default: 500 ms,
22. except with -l/-c/-C, where it‘s the -p period up to 2000 ms)

Output options:

1. -a, --alive show targets that are alive
2. -A, --addr show targets by address
3. -C, --vcount=N same as -c, report results in verbose format
4. -D, --timestamp print timestamp before each output line
5. -e, --elapsed show elapsed time on return packets
6. -i, --interval=MSEC interval between sending ping packets (default: 10 ms)
7. -n, --name show targets by name (-d is equivalent)
8. -N, --netdata output compatible for netdata (-l -Q are required)
9. -o, --outage show the accumulated outage time (lost packets * packet interval)
10. -q, --quiet quiet (don‘t show per-target/per-ping results)
11. -Q, --squiet=SECS same as -q, but show summary every n seconds
12. -s, --stats print final stats
13. -u, --unreach show targets that are unreachable
14. -v, --version show version
15. -x, --reachable=N shows if >=N hosts are reachable or not

fping

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原文地址：https://www.cnblogs.com/sunyyer/p/12621423.html