dnstracer:tldr:35956

The command "dnstracer -o ${www-example-com}" is used to perform a DNS trace route for a specific domain name, in this case, www.example.com.

Here is a breakdown of each part of the command:

• "dnstracer" is the name of the command-line utility being executed.
• "-o" is an option or flag used to specify the output format or behavior of the dnstracer command.
• "${www-example-com}" is a variable placeholder representing the domain name you want to trace.

By running this command, the dnstracer utility will perform a trace route for the DNS resolution of the www.example.com domain. It will start from the root DNS servers and recursively query each DNS server to determine the path and response time for each step of the resolution process. The output will be displayed according to the specified format using the "-o" option.