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Category: Commands

Oliver

How does the Host command work?

Commands

Host command explained

The Host command is a built-in utility software with a command-line interface (CLI) for DNS probing. You could find it pre-installed on most Linux distros like – Ubuntu, Linux Mint, Red Hat, or macOS. It serves perfectly for network diagnostics. In addition, the most common use of host command is to complete DNS lookups and check different information about a domain name and its DNS records.

 It is a very light and quick tool that can give you data about different DNS records, such as A, AAAA, MX, NS, SOA, and more. In addition, it can provide you with information for the host, for instance, its IP addresses or check nameservers.

Valuable Linux Host command examples

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Oliver

Ping command – definition and details

Commands

Ping command

Ping command is one of the built-in network diagnostic commands that you have inside your OS (Windows, Linux, macOS, FreeBSD, etc.). Ping is used for checking the connectivity between your device and the target that cloud be a hostname like google.com or IP address like 192.168.2.1.

Ping, by default, will send 4, 32-byte packets to the target using the ICMP (Internet control message protocol).

How does Ping command work? Detailed explanation

Default result of a Ping command

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Oliver

DNS troubleshooting – commands

Commands, DNS

You can troubleshoot different DNS problems using the built-in commands that you already have on your computer. No matter if you are a Windows, Linux, or macOS user, you have various commands included in your OS. Here are the 5 most popular DNS troubleshooting commands that you should know and how to use them.

Traceroute (Linux and macOS) / Tracert command (Windows)

Traceroute command on Linux and macOS or Tracert on Windows is a built-in software that you can use for DNS troubleshooting. With this one, you can understand better the route of the DNS queries. You will see each individual hop with their response time, hostname, and IP address, and you will see a complete picture of the route to the target.

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