Tags: SysAdmin

7 Reliability Questions Engineering Managers Need to Ask Their Teams

Modern software teams face no shortage of edge cases and variations across the service categories and tiers of their ever-evolving architectures. In the midst of leading a team through the day-to-day firefighting, it can be difficult to see the forest for the trees. But as managers, we know our...
Read 0 Comments

Custom Linux Installations

Customize your Linux installation and gain working knowledge of your system at the same time. Most Linux users are content with a standard installation of their distribution of choice. However, many prefer a custom installation. They may simply prefer to do things their way without dozens of...
Read 0 Comments

Your First Machine Learning Project in R Step-By-Step

Do you want to do machine learning using R, but you’re having trouble getting started? In this post you will complete your first machine learning project using R. In this step-by-step tutorial you will: Download and install R and get the most useful package for machine learning in R. Load a dataset...
Read 0 Comments

DHS Issues Security Alert About Recent DNS Hijacking Attacks

The US Department of Homeland Security (DHS) has published today an "emergency directive" that contains guidance in regards to a recent report detailing a wave of DNS hijacking incidents perpetrated out of Iran. The emergency directive [1, 2] orders government agencies to audit DNS records for...
Read 0 Comments

4 Open-Source Network Management Tools Improve Usability, Performance

Network management tools have come a long way from the early command-line products with arcane, text-based configuration files that kept everyone except the resident (typically Linux) guru in the dark. Today’s management tools, replete with desktop or web-based GUIs, easy installs and configuration...
Read 0 Comments

ss_main.jpg

ss command
Learn how to use the ss command to gain information about your Linux machine and see what's going on with network connections.

An Introduction to the ss Command

Learn how to get network information using the ss command in this tutorial from the archives. Linux includes a fairly massive array of tools available to meet almost every need. From development to security to productivity to administration…if you have to get it done, Linux is there to serve. One...
Read 1 Comments

DevOps Demands NetOps

Building applications that run on your own servers and networks used to mean some very firm demarcations between what was considered a developer task and what was left up to the network team. The move to cloud platforms and cloud abstractions (even on your own hardware) has changed where those...
Read 0 Comments

lock-1920.jpg

lets encrypt
Unencrypted HTTP sessions are wide open to abuse; lock them down with Let's Encrypt.

Protect Your Websites with Let's Encrypt

Learn how to use Let's Encrypt in this tutorial from our archives. Back in the bad old days, setting up basic HTTPS with a certificate authority cost as much as several hundred dollars per year, and the process was difficult and error-prone to set up. Now we have Let's Encrypt for free, and the...
Read 1 Comments

Back to Basics: Sort and Uniq

Learn the fundamentals of sorting and de-duplicating text on the command line. If you've been using the command line for a long time, it's easy to take the commands you use every day for granted. But, if you're new to the Linux command line, there are several commands that make your life easier...
Read 0 Comments

emmanuel-1220413-unsplash.jpg

Bash
The recently released Bash 5.0 adds new shell variables and also repairs several major bugs.

Bash Shell Utility Reaches 5.0 Milestone

As we look forward to the release of Linux Kernel 5.0 in the coming weeks, we can enjoy another venerable open source technology reaching the 5.0 milestone: the Bash shell utility. The GNU Project has launched the public version 5.0 of GNU/Linux’s default command language interpreter. Bash 5.0 adds...
Read 0 Comments

Pages

Click Here!