There are a lot of different DNS record types. Yet, some of them are more well-known. That is because they are more commonly implemented in DNS (Domain Name System) configurations. So, let’s explain a little bit more about the most popular DNS record types:
Continue Reading “Popular DNS record types you can check through your Linux device”
Reverse DNS lookup is another interesting topic that is not often discussed. As a Linux user, you have several different options to perform it. So, let’s talk a little bit more about it and how you can do it.
Reverse DNS or rDNS is a very beneficial service that supplies Reverse DNS zones for your domain name. The Reverse DNS zones are required for storing PTR records which are utilized for verification purposes. For instance, to check the IP address and if it points to the proper hostname.
Continue Reading “How to perform Reverse DNS lookup in Linux?”
The Kernel is the core of an operating system (OS). Linux Kernel is already three decades old and closes to 30 million code lines. Right now, it’s running on desktops, laptops, tablets, routers, servers, smartphones, lots of Internet of Things, and the most powerful computers in the world.
To talk about the Linux Kernel can go very long. Let’s check exactly what you need to know about it.
Continue Reading “What is Linux Kernel – Everything you need to know.”
Linux Manjaro is a free and open-source (GNU license) Linux distro based on Arch Linux. It is well-suited for developers, for home use or office. What distinguishes it from other Linux distros is that it offers full control over the hardware and software and very good performance. The desktop environments available are KDE Plasma, XFCE, and GNOME. You can customize the desktop environment with widgets and themes.
Traceroute is a built-in command with a command-line interface that you can use through the Terminal application. It serves as a diagnostic tool most commonly used to trace a route from the computer, sending the traceroute request to a hostname or IP address. It will send the query and get back a result, showing the query’s route and statistics about time and packets lost.
You can find Traceroute on Linux (almost all distros), macOS, Windows (there it is called tracert), and even Android (though you will need extra installation).
The software’s benefits are that it is free, easy to use, and serves well its purpose of tracing the route to a target.
When you are using the traceroute, your device will send packets of data starting from your IP address, going through various hops, and reaching its target – hostname or IP address. The software will use packets with a short TTL (time to live) value and listen for the ICMP replays. The probes continue until a message “port unreachable (ICMP) or rest (TCP), which will indicate host.
As a result, you will see TTLs, addresses of the hops, and round time per probe, and extra data if you used some of the options.
If you need more detailed information about the Traceroute command we recommend you this article – Traceroute command and its options
Get ready to learn about a built-in utility tool that you can find on most Linux distros and use for domain probing. The tool is called Dig.
Dig command is a built-in Linux command that you can access through the Terminal application and perform DNS queries. The full name is Domain Information Groper. You can troubleshoot your domain, get all kinds of information about it, including DNS records, name servers, and general network data. What is awesome about it is that it has more functionality than some other built-in tools like nslookup, and it is very easy to use. This is why many network administrators are using it daily, despite its basic command-line interface.
If you are interested in Dig commands we recommend you to look at this article – 10 most used Dig commands!
The Linux Host command is utility software for DNS probing that you get pre-installed on most Linux distros like – Ubuntu, Linux Mint, Red Hat, CentOS, Arch Linux, and more.
Linux Host command can show you different information for the host, its IP addresses, DNS records, and check name servers.
It does not have a graphical interface, but its CLI is enough to display all the information needed. It is a very light and fast tool that can show you information about DNS records like A, AAAA, MX, NS, SOA, and more. You could have already guessed. It can show you information about the host like its IP addresses and more.
It is very easy to use the MTR command through the Terminal on your Linux computer. Just follow these 3 steps:
Ubuntu, Debian, Linux Mint, and others based on Ubuntu or Debian:
sudo apt-get install mtr
Red Hat, CentOS, and Fedora:
sudo yum install mtr
Arch Linux, Manjaro Linux, and other Arch-based:
pacman -Sy pacman -S mtr
Basic MTR command:
mtr domain.com
*Change the domain name with the one you want.
Suggested article: What is Traceroute command?
You can do a lot using just commands on Linux. Through the Terminal, you can type the command that you want and perfume many actions and diagnostics. Depending on the distro you are using, you will have a different shell pre-installed (bash, dash, etc.). They can have small differences, but for the majority of command, they will work the same.
You can also change the shell if you like. Here you can see a Linux commands cheat sheet with the main commands and what they do.
Linux vs Windows, there is no all-around winner, but we will explore their advantages and disadvantages and show you what you could get. Let’s explore together the options you have for servers and those for average computer users.
