I've searched the respos but can't find the 'dig' command.
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dig (domain information groper) is a flexible tool for interrogating DNS name servers. It performs DNS lookups and displays the answers that are returned from the name server(s) that were queried. Most DNS administrators use dig to troubleshoot DNS problems because of its flexibility, ease of use and clarity of output. Other lookup tools tend to have less functionality than dig.
Although dig is normally used with command-line arguments, it also has a batch mode of operation for reading lookup requests from a file. A brief summary of its command-line arguments and options is printed when the -h option is given. Unlike earlier versions, the BIND9 implementation of dig allows multiple lookups to be issued from the command line.
Unless it is told to query a specific name server, dig will try each of the servers listed in /etc/resolv.conf.
When no command line arguments or options are given, will perform an NS query for "." (the root).
SIMPLE USAGE
A typical invocation of dig looks like:
dig @server name type