Linux ping command
Linux ping command to detect a host.
Run the ping command uses the ICMP protocol transmission request response message is sent, if the remote host network function no problem, I'll get back information should therefore know that the host operating normally.
grammar
ping [-dfnqrRv][-c<完成次数>][-i<间隔秒数>][-I<网络界面>][-l<前置载入>][-p<范本样式>][-s<数据包大小>][-t<存活数值>][主机名称或IP地址]
Parameter Description:
- -d use the Socket SO_DEBUG function.
- -c <Completions> set to fulfill the request response times.
- -f limit detection.
- -i <interval in seconds> Specifies the interval to send and receive information.
- -I <Network interface> sent data packet using a specific network interface.
- -l <Front loading> set the packet before sending the request for information, first issued.
- -n output value only.
- -p <style template> Set fill packet template styles.
- -q does not display the exception process execution instruction, the beginning and end of the relevant information.
- -r ignore normal Routing Table, directly to the data packet to the remote host.
- -R Record routing process.
- -s <packet size> set the packet size.
- -t <survival value> Set the size of the survival value of TTL.
- -v displays detailed execution instructions.
Examples
Detecting whether communication with the host
# ping www.w3cschool.cc //ping主机 PING aries.m.alikunlun.com (114.80.174.110) 56(84) bytes of data. 64 bytes from 114.80.174.110: icmp_seq=1 ttl=64 time=0.025 ms 64 bytes from 114.80.174.110: icmp_seq=2 ttl=64 time=0.036 ms 64 bytes from 114.80.174.110: icmp_seq=3 ttl=64 time=0.034 ms 64 bytes from 114.80.174.110: icmp_seq=4 ttl=64 time=0.034 ms 64 bytes from 114.80.174.110: icmp_seq=5 ttl=64 time=0.028 ms 64 bytes from 114.80.174.110: icmp_seq=6 ttl=64 time=0.028 ms 64 bytes from 114.80.174.110: icmp_seq=7 ttl=64 time=0.034 ms 64 bytes from 114.80.174.110: icmp_seq=8 ttl=64 time=0.034 ms 64 bytes from 114.80.174.110: icmp_seq=9 ttl=64 time=0.036 ms 64 bytes from 114.80.174.110: icmp_seq=10 ttl=64 time=0.041 ms --- aries.m.alikunlun.com ping statistics --- 10 packets transmitted, 30 received, 0% packet loss, time 29246ms rtt min/avg/max/mdev = 0.021/0.035/0.078/0.011 ms //需要手动终止Ctrl+C
Specifies the number of received packets
# ping -c 2 www.w3cschool.cc PING aries.m.alikunlun.com (114.80.174.120) 56(84) bytes of data. 64 bytes from 114.80.174.120: icmp_seq=1 ttl=54 time=6.18 ms 64 bytes from 114.80.174.120: icmp_seq=2 ttl=54 time=15.4 ms --- aries.m.alikunlun.com ping statistics --- 2 packets transmitted, 2 received, 0% packet loss, time 1016ms rtt min/avg/max/mdev = 6.185/10.824/15.464/4.640 ms //收到两次包后，自动退出
Multi-parameter
# ping -i 3 -s 1024 -t 255 g.cn //ping主机 PING g.cn (203.208.37.104) 1024(1052) bytes of data. 1032 bytes from bg-in-f104.1e100.net (203.208.37.104): icmp_seq=0 ttl=243 time=62.5 ms 1032 bytes from bg-in-f104.1e100.net (203.208.37.104): icmp_seq=1 ttl=243 time=63.9 ms 1032 bytes from bg-in-f104.1e100.net (203.208.37.104): icmp_seq=2 ttl=243 time=61.9 ms --- g.cn ping statistics --- 3 packets transmitted, 3 received, 0% packet loss, time 6001ms rtt min/avg/max/mdev = 61.959/62.843/63.984/0.894 ms, pipe 2 [root@linux ~]# //-i 3 发送周期为 3秒 -s 设置发送包的大小 -t 设置TTL值为 255