Category: Linux 101 – RedHat, CentOS, Ubuntu

Why would one want to change the default SSH port? Does it make your server more secure? In a sense, it does. Changing the default port means that attackers get nothing by attacking the default port 22. While that’s not to say that the new port can never be hacked now, it does provide a fair amount of deterrence to […]

Introduction to Installing htop on CentOS 7 Many sysadmins know about top, the standard process management and activity monitor that comes on most Linux systems. But there are times when top does not provide the information you’re really looking for, or you want something that updates more frequently as the state of your system changes. Look no further than htop. It’s […]

What is CentOS CentOS is an open-source Linux distribution based on Red Hat Enterprise Linux (RHEL). CentOS 7 is viewed as the preferred option for web hosting due to its stability and active developer community. In this tutorial, learn how to install CentOS 7 in a few simple steps. Prerequisites Recommended minimum of 10GB of free disk space CentOS 7 […]

Configuring a Samba Server The default configuration file (/etc/samba/smb.conf) allows users to view their home directories as a Samba share. It also shares all printers configured for the system as Samba shared printers. In other words, you can attach a printer to the system and print to it from the Windows machines on your network. Graphical Configuration To configure Samba […]

Linux’s terminal commands are powerful, and Linux won’t ask you for confirmation if you run a command that won’t break your system. It’s not uncommon to see trolls online recommending new Linux users run these commands as a joke. Learning the commands you shouldn’t run can help protect you from trolls while increasing your understanding of how Linux works. This […]

Question: How do I ping a specific port of a remote server? I need to find out whether the port on the remote server is open. Answer: ping utility does not allow you to ping specific port on you remote server. To see whether a specific port is open on a remote server you can use port-scanner such as nmap […]

All great websites have a great server behind them. In this tutorial, I’ll show you how to set up a dedicated web server (with Apache, MySQL, and PHP) using that old computer you have lying around the house and some free software. 1. A Quick Overview In this tutorial, we are aiming to accomplish several things: We’re going to install […]

Many of the devices that we use each day such as computers, mobile phones, televisions, and more run on Linux, but how is Linux built? This wonderful video from The Linux Foundation shows just how it is done.