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How to Install Portainer Docker Environment Manager on Ubuntu Cloud Servers Docker provides a flexible, portable, and self-sufficient environment where developers can create, deploy, and manage applications on the cloud or on-premise. Managing the docker images can be a challenge and time consuming especially when working with a large number of images and containers. The […]

  BASH or the “Bourne-Again Shell” is the scripting language with which many Linux tasks are accomplished. It is an easy to use language and can be freely adapted and expanded which makes it extremely powerful. It enables us to write our own commands, making systems automation (when the computer does the boring tasks) very […]

How to use Linux sed ‘s’ Function As Linux commands go, this one has a very confusing name. That is, until someone tells you that like many Linux commands, it is yet another abbreviation. This time, sed is short for stream editor. Many editors for text files operate in a sort of point-click-and-save fashion. They cannot […]

How to convert your CentOS 7 firewall from FirewallD to iptables, and fix fail2ban On Centos 7, the default firewall is firewalld. Even though this is just a shell interface to configure iptables, it has its limits when it comes to applying advanced rules and customizing your firewall. You can fix this by getting rid of […]

First steps Before you try improving, get a baseline measurement of your current site and an idea of what needs improvement. A great tool to use for this is Google PageSpeed Insights. This site will measure your website response and give you an idea of where the problem areas are. Once you have data on your […]

How to install and use GNU nano Text Editor in Linux If you are new to the Linux console, you might be having a hard time navigating the cumbersome pre-installed text editors. Fret not, as there is a beginner-friendly text editor called nano, which will simplify your command-line editing manifold. nano has all the features […]