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There are three primary tools used to interact with DNS servers at a command line
- this is a very full featured tool which can be found on any Linux system.
- this is the simplest tool to use which presents clear, easy to understand results.
- although available on most systems, it can be a bit tricky to use and generally considered deprecated.
In their simplest form, each can be used by entering the command followed by a host or domain name to look up.
e.g. 'host example.com'
See the individual Linux man pages for usage details (e.g. 'man dig').