How to Use dig Command on Linux – Guide
Dig is a command-line utility that performs DNS lookups by querying nameservers and displaying the result. This tutorial covers all the basic uses of the command that you should know about in the Linux operating system. By default, dig sends the DNS request to the nameservers listed in the resolver (/etc/resolv.conf), unless asked to query a specific nameserver.
The dig command in Linux is used to collect DNS information. It stands for Domain Information Groper and collects data through domain name servers. The dig command is useful for troubleshooting DNS issues, but it can also be used to display DNS information.
Install dig on Linux (optional)
sudo apt-get update If the dig command is not installed, you will receive a message that tells you how to install it. ..
dig -v This will print the version of dig and the list of commands that it can find.
sudo apt-get install dnsutils -y
Debian/Ubuntu:
sudo apt-get install dnsutils -y
CentOS / Red Hat:
bind-utils is a package that allows you to bind a port to a specific address. This can be useful if you want to bind an interface to a specific host or network, or if you want to use a different port for different applications.
sudo apt-get update sudo apt-get install ubuntu-desktop
dig Syntax
dig [options]
Excavation at [server] yielded the following results: a metal detector, a tool box, and a number of coins.
The hostname or IP address of the machine on which the query is directed.
The DNS of the server to be queried is [server name] .
The type of DNS record to retrieve. By default (or if left blank), dig uses record type A.
How to Use dig command with examples
The dig command is used to query a remote server for information. It can be used to get the name of a file, the size of a file, or the modification time of a file. ..
DNS Lookup
dig This will give you a list of all the domains that are registered with the DNS server.
The most important section is the ANSWER section:
The second column lists the results of the query The third column lists the time that the query was executed The fourth column lists the result of the search for a specific word or phrase
The Time to Live column is a set period of time after which the record is updated.
The third column shows the query that was used to find the information in the second column.
The fourth column displays the query type – in this case “A” means an A record (address). ..
The final column displays the IP address associated with the domain name.
OPT PSEUDOSECTION displays advanced data:
A DNS extension system is needed to support the Domain Name System (EDNS). This system would allow users to access resources, such as websites and email, through a different DNS address than the one used to identify them.
A flag is a piece of cloth or other material with a design or message that is flown at an event to show support for that nation or group.
UDP packets are limited to a certain size, which can cause problems when trying to send large files over the network. ..
The QUESTION section displays the query data that was submitted:
The second column is the answer to the question The third column is a brief description of the article or blog post in question
The second column is the type of the query.
The third column specifies the record unless otherwise specified. The first column is the street address, and the second column is the zip code. ..
The STATISTICS section shows metadata about the query:
How long did it take for the company to respond to my inquiry?
indicates that the server is acting as its own DNS server. The IP address and port of the answering DNS server. You may notice a loopback address on this line – this indicates that the server is acting as its own DNS server. ..
A local DNS configuration is used to translate DNS addresses. ..
Timestamp when the command was executed
MSG SIZE rcvd – The DNS server response size is the size of the DNS response received from the DNS server.
Specify DNS server
dig -q google.com This will query the Google domain server for the information you need.
ANY option
To return all query results, use the following: To return all query results, use the following:
short answer option
IP address of the domain name
Detailed answer option
Run -noall -answer with the dig command to access detailed information in the answers section
Google.com - Noall - Answer
tracking option
The +trace option lists each different server the query passes through to your final destiny. Use this command option to identify the IP address where traffic is falling.
DNS Reverse Lookup
IP address of domain name: The domain name can be found by its IP address.
Final note
How to Use dig Command on Linux Linux is a Unix-like operating system and it comes with a number of tools that can be used to explore and analyze files. One of these tools is the dig command, which can be used to search for specific files or folders. To use the dig command, you first need to create a file called dig.conf in your home directory. This file contains the settings for the dig command. Next, you need to install the dig tool on your computer. You can find this tool in the usual location (for example, /usr/bin/dig). Once you have installed the Dig tool, you can use its help function to learn more about its usage. Next, you will need to create a new directory on your computer where you will store your files. To do this, use the mkdir command. After you have created your new directory, use the dig command to search for specific files or folders inside it. For example, if you want to search for all *.txt files in your current directory, use the following command: dig -t text -p “.*txt” mydir
