Functions of the ping command and differences between Linux and Windows systems

The function of the ping command is to test the network connectivity between hosts, send out data packets based on the ICMP transmission contract linux network delay test, and require the other host to reply. If the other host’s network function does not If there is a problem and the firewall allows the traffic, the message will be replied, and we will know that the other party's host system is online and running normally.

However, it is worth noting that there are certain differences between Linux and Windows. The ping command under the Windows system will send out 4 requests and then manually terminate the command; while the Linux system will not terminate manually and requires the user to automatically press the key combination. "Ctrl+c" can be used to end, or add the -c parameter when initiating the command to limit the number of messages sent.

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Sentence format: ping[parameter] target host

Commonly used parameters:

-d uses the SO_DEBUG function of Socket

-c

Specify the number of times to send messages

-i

Specify the interval between sending and receiving messages

-I

Use the designated network socket to send data packets

-l

Set the data package to be sent first before sending the requested information

-n

Only output numerical values

-p

Set a template style filled with packets

-q

Do not display the instruction execution process

-R

Record routing process

-s

Set the packet size

-t

Set the size of the survival value TTL

-v

Display the execution process of the command in detail

Reference examples

Test the network connectivity with the specified website server (you need to automatically press the "Ctrl+c" key combination to end the command):

C:WindowsSystem32>ping www.tsyvps.com
正在 Ping www.tsyvps.com [112.192.19.252] 具有 32 字节的数据:
来自 112.192.19.252 的回复: 字节=32 时间=13ms TTL=50
来自 112.192.19.252 的回复: 字节=32 时间=9ms TTL=50
来自 112.192.19.252 的回复: 字节=32 时间=9ms TTL=50
来自 112.192.19.252 的回复: 字节=32 时间=9ms TTL=50
112.192.19.252 的 Ping 统计信息:
数据包: 已发送 = 4，已接收 = 4，丢失 = 0 (0% 丢失)，
往返行程的估计时间(以毫秒为单位):
最短 = 9ms，最长 = 13ms，平均 = 10ms

Test the network connectivity with the designated website serverlinux network delay test, sending request packets is limited to 4 times:

[root@linuxcool ~]# ping -c 4 www.tsyvps.com
PING www.tsyvps.com (112.192.19.252) 56(84) bytes of data.
64 bytes from www.tsyvps.com (112.192.19.252): icmp_seq=1 ttl=52 time=24.7 ms
64 bytes from www.tsyvps.com (112.192.19.252): icmp_seq=2 ttl=52 time=24.7 ms
64 bytes from www.tsyvps.com (112.192.19.252): icmp_seq=3 ttl=52 time=24.7 ms
64 bytes from www.tsyvps.com (112.192.19.252): icmp_seq=4 ttl=52 time=24.7 ms
4 packets transmitted, 4 received, 0% packet loss, time 3005ms
rtt min/avg/max/mdev = 24.658/24.664/24.673/0.111 ms

Test the network connectivity with the specified host, send the request packet 3 times, Linux operating system principle, each time interval is 0.2 seconds, the maximum waiting time is 3 seconds:

[root@linuxcool ~]# ping -c 3 -i 0.2 -W 3 192.168.10.10
64 bytes from 192.168.10.10: icmp_seq=1 ttl=64 time=0.166 ms
64 bytes from 192.168.10.10: icmp_seq=2 ttl=64 time=0.060 ms
64 bytes from 192.168.10.10: icmp_seq=3 ttl=64 time=0.113 ms
--- 192.168.10.10 ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 410ms
rtt min/avg/max/mdev = 0.060/0.113/0.166/0.043 ms

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