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dnstracer:tldr:7db93
The command you mentioned is using the "dnstracer" tool with some arguments and variables.
Here is what each part of the command does:
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"dnstracer": A command-line tool that traces the DNS (Domain Name System) queries from a given domain or host, showing the DNS servers involved in resolving the domain.
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"-r": An argument used to specify the number of iterations or hops to be traced. In this case, the variable "${5}" is used to represent the number of iterations or hops.
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"${5}": A variable that holds the number of iterations or hops to be traced. It could be a specific number defined elsewhere in the script or command line. For example, if "${5}" is set to 3, the command will trace the DNS queries for three iterations.
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"${www-example-com}": Another variable that represents the domain name to be traced. This variable should contain the actual domain name or hostname you want to trace. For example, if "${www-example-com}" is set to "example.com", the command will trace the DNS queries for the "example.com" domain.
In summary, the command "dnstracer -r ${5} ${www-example-com}" is used to trace the DNS queries for a specified domain or hostname, with the number of iterations or hops determined by the value of "${5}".