i started a ping in mac os x terminal how do i stop it.

I STARTED A PING IN MAC OS X TERMINAL HOW DO I STOP IT. WINDOWS

Both of these indicate a failure, but did you know that you can use these two results to predict where the network problem lies? The two most common results to watch for are timeout and unknown host. Results and techniquesĭelving a little deeper into the results, the ping output displays the hostname and IP address information, packet loss, response times, etc.

This is because ping could not resolve the given hostname to an IP address in the second test. If you ping the same destination by hostname, and it fails, you know name resolution is not working. If you ping a destination by IP address, and the ping succeeds, you know you have basic connectivity. You can use the ping command to test name resolution services, too.

I've used the continuous ping during reboots trick more than any other, however. I particularly like the ability do a quick name resolution query. I've already uncovered some good uses for ping with the above options. This is a quick name resolution query: # ping -c 1 server01įigure 4: Using the quiet mode with ping. You can use a variation of this to simply display the IP address of the destination by sending a single ping to a hostname. For example, to send five pings, type: # ping -c 5 192.168.2.200 You can adjust the number of pings by using the -c option, followed by the desired number of ping messages. I can even use an audible cue with ping, letting me know when the pings are successful. Plan for this if you work with both platforms. Note: The options for ping vary somewhat between Linux and Windows. In the meantime, I can work on other projects. When the ping results show success, I know the reboot process on the remote machine has been completed. I can issue the reboot command and then set up a continuous ping from my laptop to the server. The server needs to be rebooted before I can continue with its configurations.

I STARTED A PING IN MAC OS X TERMINAL HOW DO I STOP IT. WINDOWS

For example, imagine I'm remotely connected to a Windows server from my Linux laptop. One of my favorite uses of ping is to inform me when a remote server or network device has restarted.

Complimentary course: Deploying containerized applicationsīy default, Linux sends continuous pings.

A practical introduction to container terminology.

- u user only returns commands owned by the named user.

When used with -P above, it can significantly speed up lsof's output.

-n disables the conversion of network numbers to hostnames.

-P disables the conversion of port numbers to port names, speeding up output.

Process IDs can also be excluded with a ^, as in 123,^456, which would specifically exclude PID 456.

Multiple PIDs can be set by using commons, such as -p 123,456,789. -p restricts lsof to a particular process ID (PID).Instead, it allows the user to specify the protocol and status for the command to return. But when paired with the -i flag, -s works differently. -s typically forces lsof to display file size.The precursor can also be used to specify hostnames in the same way, but both remote IP addresses and hostnames cannot be used simultaneously. IPv6 addresses can be specified in the same fashion. Using returns only connections to the IPv4 address 1.2.3.4.A range of ports can be specified with a dash, as it -iTCP:25-50. iTCP:25 returns only TCP connections on port 25. iTCP or -iUDP returns only TCP and UDP connections. The -i flag also can be expanded to specify further details.Adding a 6 instead ( -i6) displays only IPv6 connections. Adding a 4, as in -i4, displays only IPv4 connections. -i displays open network connections and the name of the process that is using the connection.For information on more flags and technical explanations of each, check out lsof's man page or run man lsof at a Terminal prompt.

I started a ping in mac os x terminal how do i stop it.