Powerful Command--ping command summary

The ping command is mainly used to detect connectivity between two hosts in the network, and we usually say, ping a host, see if it is open, the webpage does not open, ping the default gateway. But sometimes we have some hosts for security, to prevent others to ping, usually set up a firewall, the host can accept the packet, but can not return the packet, so the ping does not indicate that the host is in the shutdown state.

The ping commands in Linux are different from those in Windows, and the ping in Linux does not automatically terminate, it needs to be terminated with CTRL + C, or you can specify the number of pings with the –c parameter.

Command format:

ping [-dfnqrrv][-c send][-i interval seconds][-i network interface][-l pre-load][-p template style]
[-S packet size] [-t survival value] [Host name or IP address]

Parameter description:

-D uses the So_debug function of the socket.

-F limit detection. Send a large and fast network packet to a machine to see its response.

-n outputs only numeric values. Www.2cto.com

-Q does not display information for any transmittal packets, only the final result is displayed.

-R ignores the normal routing Table and sends the packet directly to the remote host. This is usually a matter of looking at the network interface of this computer.

-R records the routing process.

-V shows the execution of the instruction in detail.

The-c number stops after the specified number of packets are sent.

-I seconds set interval a few seconds to send a network packet to a machine, the default value is one second to send once.

The-I network interface sends out packets using the specified network interface.

-L pre-load sets the packets that are emitted before the requested information is sent out.

The-P template style sets the template style that fills the packet.

-S bytes Specifies the number of bytes of data sent, the default value is 56, plus 8 bytes of ICMP header, which is a total of 64ICMP data bytes.

-T survival value sets the size of the Live value TTL.

Temporarily think of these, will be updated later, if there is wrong, also please point out, thank you.

This article is from the "focus on Java,linux Technology" blog, please be sure to keep this source http://wuqinglong.blog.51cto.com/9087037/1588373

Powerful Command--ping command summary