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tcpdump:tldr:85192
The command "tcpdump host ${www-example-com}" is used to capture and analyze network traffic related to a specific host, which in this case is represented by the variable "${www-example-com}".
Tcpdump is a command-line packet sniffer tool that allows you to capture and examine network packets in real-time. By specifying the "host" option, you can filter the captured packets to only display the ones related to a particular host.
In this command, "${www-example-com}" is a placeholder for a specific hostname or IP address of the host you want to capture traffic for. For example, if you want to capture traffic for the website "www.example.com", you would replace "${www-example-com}" with the actual hostname or IP address.
Executing this command will start tcpdump, and it will capture and display all network packets to and from the specified host. This can be useful for monitoring network traffic, troubleshooting network issues, or analyzing network behavior.