In this post, we take a look at how the traceroute command works. traceroute is a utility command that prints the route (or hops) that a packet takes to reach another host. We start with an example of traceroute. Then we go through what happened behind the scenes. Finally, we run the traceroute command one more time while sniffing the traffic with tcpdump.
Traceroute example Let’s look at an example:
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A few weeks ago, I saw a great video explaining how Docker works under the hood (see video below). The video ends with a demo where Jérôme Petazzoni creates a container using nothing but bash. I found many of the commands that he used pretty cryptic, so I decided to explain what he did and the purpose of each command.
Video (The demo starts around minute 41)
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