ping macos

The humble ping tool and how to use it with real examples

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ping‘s basic use is to determine the time it takes to send a packet to the destination and receive a response, the lower the time in milliseconds (ms) the better.

The ping tool is the most commonly known network tool. I first used it decades ago as a child to test if websites were actually up or if my dial-up internet was just awful. Here are a few ways to use the tool in real world examples.

For these examples I will be using the IP address 1.1.1.2 and hostname security.cloudflare-dns.com – Both of these are DNS servers run by Cloudflare. You can find more information and how to set it up here.

Example #1 – Change the time between each ping

ping interval
ping -i 10 1.1.1.2

ping is great to test an unstable internet connection, but by default, ping will send another after just 1 second. I like setting to 10 in this example. The “-i” stands for interval.

EXAMPLE #2 – SEND A CERTAIN NUMBER OF PINGS

ping count
ping -c 100 1.1.1.2

You can set the number of pings to be sent and the utility will quit after and print the results. Very useful for obtaining a good average latency out of 10 or 100 packets as well as establishing a good average percentage of packet loss. The “-c” stands for count.

EXAMPLE #3 – OBTAIN THE IP ADDRESS OF A HOSTNAME/DOMAIN NAME

ping domain
ping security.cloudflare-dns.com

This has to be the most popular use-case for ping that I remember from my childhood. We would use this simple tool to find an IP address for a hostname/domain name and use that to gather more information about the service.

EXAMPLE #4 – COMBINE THE OPTIONS

ping combined
ping -i 10 -c 10 security.cloudflare-dns.com

I use this to easily test the latency of a DNS, proxy, VPN or any other server. I will ping it ten times with a 10 second interval and then I just read the average time and I compare it to another. For very poorly performing servers I will take a sample of 100 pings with 60 seconds in between each and I leave it running to see if the performance issues are related to the time of day or some specific operations on the machine.


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