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How can the Dig command be used in a linux system? In view of this problem, this article introduces the corresponding analysis and answers in detail, hoping to help more partners who want to solve this problem to find a more simple and feasible way.

Introduction to Dig:

Dig is a Unix-like command-line mode to query DNS, including NS records, A records, MX records and other related information tool. Since the Dig man page document has been missing all the time, this article serves as a wizard for using dig.

The source code of Dig is part of the ISC BIND package, but it is not included in most documents that compile and install Bind, but in linux systems, it is usually part of a package, bind-tools in Gentoo, bind-utils in Redhat/Fedora, or dnsutils in Debian.

If you want to find information about the configuration of Bind, you can refer to my article: Bind for the mall LAN (http://www.madboa.com/geek/soho-bind/). Understand the default output: the simplest and most common query is to query a host, but by default, the output of Dig is very detailed. You may not need all the output, but it's really worth knowing.

The following is a query with comments:

$dig www.isc.org

Above is my command line for invoking dig.

; DiG 9.2.3 www.isc.org;; global options: printcmd

The partial output of Dig tells us some version information about it (version 9.2.3) and global setting options. If + nocmd is the first argument on the command line, then this part of the output can be queried by adding + nocmd.

;; Got answer:;;-> > HEADER

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