How to Use dig Command on Linux

In Linux and Unix computers, the “dig” command is an important tool that is mostly used for DNS lookups. This statement makes it easier to get information from DNS servers by giving detailed answers about a given hostname. Users can find out information like the IP address that goes with a certain hostname and other DNS records by typing the “dig” command into the prompt. In order to use the “dig” function correctly, users must enter certain syntax in the terminal. The tool “dig hostname” can be used to find the IP address that goes with a hostname. When this command is run, the DNS server will send a full response that includes the IP address that goes with the given hostname.

In addition, the “dig” command can be changed to get more DNS information. For instance, the following command can be used to get details about a domain’s mail exchange (MX) records: look up MX domain. This command will give you information about the mail servers that handle emails for the given name. Users can also look at other types of DNS records by changing the order to match, such as A (IPv4 address), AAAA (IPv6 address), CNAME (canonical name), and TXT (text) records.

Understanding the dig Command on Linu

Let’s take a look at what the dig command is before we talk about how to use it. Domain Information Groper, or Dig, is a tool that lets you ask name servers for information and get it back. When you run dig, it will send DNS requests to the nameservers mentioned in the resolver file (/etc/resolv.conf). You can, however, choose a unique nameserver if you need to.

Important Point 1: Installing dig on Linux

How to Use dig Command on Linux

To get started with the dig command, you need to ensure that it is installed on your Linux system. Most modern Linux distributions already include the dig command. You can verify its installation by opening a terminal and running the following command:

dig -v

If the command returns a version number, you can skip the installation section. Otherwise, you can install dig by following these steps:

Debian / Ubuntu:

sudo apt-get install dnsutils

CentOS / RedHat:

sudo yum install bind-utils

Once the installation is complete, you can verify it by running the dig -v command again.

Important Point 2: Basic Syntax and Usage of the dig Command

The dig command follows a specific syntax. Here’s a breakdown of its basic usage:

dig [server] [name] [type]

  • [server]: The hostname or IP address to which the query is directed.
  • [name]: The DNS server to consult.
  • [type]: The type of DNS record to retrieve. If left blank, dig defaults to record type A.

Final Words

It is assumed that you already have some level of familiarity with the dig command, which can be found in Linux. You will be able to obtain extra information on domain nameservers if you use this command. Next, we recommend that you familiarize yourself with the best DNS practices for both performance and safety, as well as the method of flushing DNS in order to delete any previously saved information pertaining to DNS lookups.


What is the dig process in Linux?

The Domain Information Groper, or Dig, is a Linux application for the command line that does DNS lookups by requesting name servers and showing the results to the user. Dig’s full name is the Domain Information Groper. Unless it is instructed to query a particular name server, dig will send the DNS query to all of the name servers that are specified in the resolver configuration file (/etc/resolv.conf).

How do I check DNS status in Linux?

In order to show the name resolution servers that have been configured for Linux, use the resolvectl status command. resolvectl can be used to display information about DNS servers. Display information about DNS servers by utilising the graphical programme known as Network Manager. On macOS, entering scutil –dns will list the name resolution servers that have been configured.

Editorial Staff
Editorial Staff
The Bollyinside editorial staff is made up of tech experts with more than 10 years of experience Led by Sumit Chauhan. We started in 2014 and now Bollyinside is a leading tech resource, offering everything from product reviews and tech guides to marketing tips. Think of us as your go-to tech encyclopedia!


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