Introduction to the Domain Name System (DNS)
Learn how the global DNS system makes it possible for us to assign memorable names to the worldwide network of machines we connect to every day.
Tweak your system performance with ‘noatime’
Turn off “access time” to make a slight but noticeable improvement on system performance.
Using rsync for Backup
There are many options for performing backups. Most Linux distributions are provided with one or more open source programs especially designed to perform backups. There are many commercial options available as well. But none of those directly met my needs so I decided to use basic Linux tools to do the job.
How to update a Linux symlink
UNIX and Linux users find many uses for links, particularly symbolic links. One way that I like to use symbolic links is to manage configuration backups of various IT equipment.
Mastering Storage Management on Linux
Knowing how much of your disk is being used by your files is an important consideration, no matter how much storage you have. My laptop...
Linux monitoring tools to keep your hardware cool
Thermal stress can damage your computers. Learn how to monitor the internal temperatures of your computers tohelp you keep your hardware cool.
Serial communication on Linux
Learn to use the ancient serial communications hardware and software methods that are needed even today in many data centers.
Navigating the ‘top’ Command in Linux
When checking out Linux systems (or even troubleshooting computers running other operating systems), the top command provides information to assess the computer’s overall health.
It can give a quick overview of what is happening on servers or other Linux systems, including Raspberry Pi with a dynamic real-time view of a running system. But there is so much more to the top command than meets the eye.
Using sudo to delegate permissions in Linux (Updated)
Learn how to assign authority for managing network functions or specific services to trusted users while protecting the security of the root password.
How I configured a DHCP server for my personal lab network
The Dynamic Host Configuration Protocol (DHCP) provides network configuration data to client hosts on a network, allowing for centralized network configuration management.
Parsing config files with Bash
Separating config files from code enables anyone to change their configurations without any special programming skills.
Convert your Windows install into a VM on Linux
Here’s how I configured a VirtualBox VM to use a physical Windows drive on my Linux workstation.
Team of one? The Zen postmortem
The practice of yoga offers sysadmins valuable lessons in self-examination.
Configure a Linux workspace remotely from the command line
Nearly everything can be done from the Linux command line, including remote configuration of desktops such as Xfce4.
Manage your APC battery backup system with this Linux command
Protect yourself from power incidents by running a simple utility: apcupsd.
Ansible #1: My first day using Ansible
A sysadmin shares information and advice about putting Ansible into real-world use configuring computers on their network.