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cPanel DNS Tutorials – Step by step guide for most popular topics

cpanel tips and tricks

How to Add SPF and DKIM to All Domains in cPanel Servers Question: How can I add SPF and DKIM to all domains in cPanel server? Answer: You can do it with this tyny handy script that we will show you below using the command line from the root user of your cPanel server. SPF and Domain Keys (DKIM)…

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psql command not found

Linux / Unix Tips and Tricks

PostgreSQL is a very popular database engine used by a lot of websites, is one of the most used relational database management system available, and after installing it we can use some tools that it includes. One of these tools is a command-line tool called psql, and today we are going to learn a lot about it, and…

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How to Change Hostname on CentOS Linux

centos tips and tricks

A lot of us have heard or read the word hostname before, but the meaning of this term may not be exactly clear if we are not related to the hosting industry or to the Linux community in some way. We may also hear about it if we are taking part in a web development career. If you…

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Source command not found

Linux / Unix Tips and Tricks

Many times when we are working on Linux we have come across a pretty common error regarding source. This error is source: command not found, and today we are going to explain to you everything that you need to know about it. In this article, you will learn what is source, why this error happens and of course,…

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Disable Firewalld on CentOS

centos tips and tricks

How can I disable Firewalld on CentOS Linux? That’s is one of the main questions asked on forums and places when you are a beginner working on CentOS systems. The short answer is, you don’t need to disable it, that’s the easy workaround. However, if you don’t have time to play with firewalld and learn how it works,…

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ifconfig command

Linux / Unix Tips and Tricks

The ifconfig command is a very popular tool available on most Linux distros. The name “ifconfig” comes from “Interface Configuration”, it is used to check our system’s network interface and we can also use it to change some of the network interface settings. By using ifconfig we can quickly take a look at the different settings of our…

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skip-name-resolve: how to disable MySQL DNS lookups

mysql tips and tricks

MySQL Reverse DNS lookups are often the cause of long delay and slow MySQL performance when running certain SQL queries. Sometimes it takes hours or days to detect that the problem in your slow SQL connection times is indeed caused by the skip-name-resolve variable located inside your MySQL configuration file. This tutorial applies to the following scenarios: Disabling…

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