This article explains how to create a custom new service units and CentOS 7 with systemd and how to manage services using systemctl command.
How to install and configure LAMP stack (Linux, Apache, MySQL PHP) in Ubuntu 16.04
How to configure network interfaces in Ubuntu 16.04 LTS with static IP addresses or DHCP from command line.
This article explains how to configure network interfaces in Centos 7 from command line interface without using Network Manager.
This article shows you how to install and configure a PXE boot server and NFS in CentOS 7 to use as a Network Install Server
This article show you how to disable selinux in CentOS 7, adjust date and time and how to manage users in CentOS 7 from command line.
Step-by-step instructions with screenshot on how to install CentOS 7 and to configure network, manage packages and services after minimal install.
New updated Ubuntu cheatsheet for systemd based versions
If you have forgotten the root password on CentOS or other RHEL based Linux distributions, you can reset it easily in a few steps
Batch convert PDF files to image format such as PNG and JPEG easily using Ghostscript.