Tags: Tutorial

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Jack Wallen discusses the command-line tools that are invaluable to the task of making configuration more efficient.

How to Effectively and Efficiently Edit Configuration Files in Linux

Every Linux administrator has to eventually (and manually) edit a configuration file. Whether you are setting up a web server, configuring a service to connect to a database, tweaking a bash script, or troubleshooting a network connection, you cannot avoid a dive deep into the heart of one or more...
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Snapshots
Snapper is a command-line program that allows you to create, delete, and compare snapshots of your filesystem.

How to Easily Roll Back Changes with Snapper

One thing a Linux sysadmin must know how to do is recover from a change gone bad. It happens. You install, upgrade, or configure a system or service and things immediately go wrong. What do you do? If you’ve made a copy of the configuration file, you’re okay. If the software didn’t install too many...
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Node.js
In the second part of this introduction to using Node.js, Paul Brown shows how to create a single-page web application.

Get Started Writing Web Apps with Node.js: Using the All Powerful NPM

In a previous article, I provided a quick introduction to Node.js and explained what it is, what it does, and how you can get started using it. I mentioned a few modules that can help you get things done, and they all -- pug, ejs, and express -- are external modules that will need to be installed...
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GNOME Shell extensions
Jack lists 10 GNOME Shell Extensions to help make your desktop experience more efficient, productive, and enjoyable.

10 GNOME Shell Extensions You Should Be Using

When GNOME Shell (aka GNOME 3) dropped into the world of Linux, many criticized it for not being flexible enough. The new-look GNOME was seen as a step backward in productivity and efficiency. GNOME however had a few tricks up its sleeve to silence such naysayers. One such trick is GNOME Shell...
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dig utility
Chris Binnie explains how dig syntax differs from other DNS lookup packages and offers some time-saving examples.

Dig Into DNS: Part 2

In the first article in this series, I provided an introduction to the powerful dig utility and its uses in performing DNS lookups. For those who haven't used the command before, these articles will give a useful overview of its features and capabilities. This time, I’ll explain how dig syntax...
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Elementary OS Loki
Learn why Jack Wallen says Elementary OS Loki is one of the most elegant and well-designed Linux desktops on the planet.

Elementary OS Loki Has Arrived

I’ve been a big fan of Elementary OS Freya since it released in 2015. So, when I heard the developers had released the beta of the next iteration, Loki, into the wild, I immediately downloaded and installed. I went into this wondering how the Elementary team could improve on their already...
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dig utility
This series of articles will explore the dig DNS lookup tool and its many features and uses.

Dig Into DNS: Part 1

There’s little debate that one of the absolutely fundamental services critical to the functionality of the Internet is the Domain Name System (DNS). Akin to the Simple Mail Transfer Protocol (SMTP), which is the grounding for all things email, and the Network Time Protocol (NTP), which keeps the...
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Kate text editor
Kate is a user-friendly text editor with some powerful features.

Advanced Search and Replace with the Kate Text Editor

The powerhouse Kate text editor has advanced search-and-replace, including support for escape sequences and regular expressions, so you can make complex corrections without leaving your document. The Kate text editor is my favorite and has been my main workhorse for years. Kate has a lot of great...
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apt repository
Once you create your very own localized repository, apt can install any .deb file placed in the local repo directory and resolve the associated dependencies.

Create Your Own Local apt Repository to Avoid “Dependency Hell”

There are times when you download a .deb file that simply must be installed. Once on your machine, you run the dpkg command on the file only to find yourself in a quagmire of dependencies. Unfortunately, that necessary piece of software cannot be found in a standard repository. Instead of trying to...
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feh images
The feh X11 image viewer is a fast, lightweight image-viewing tool that runs in any X terminal.

Cool Linux Command-Line Image Management Hacks

Feh and the identify command are two of the tools I use for viewing and managing images on Linux. They are fast, flexible, and can be stuffed into scripts for automating operations, which is especially valuable when you work with artists or marketing people who have large image galleries to...
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