Tutorial Category: Tutorials

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Manage LDAP servers
Learn how to manage all your LDAP servers from a single point of entry with Apache Directory Studio.

How to Install Apache Directory Studio and Connect to an OpenLDAP Server

If you happen to administer one or more OpenLDAP servers, you know that they can be a challenge to work with. Working with LDAP itself can be a bit tricky; to that end, many opt to go the phpLDAPadmin route (which is an amazing tool for individual servers). However, when you’re managing numerous...
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vim
Vim is so flexible you can make it do just about anything with a minimum number of keystrokes.

An Introduction to Vim for Sysadmins

Why, you ask, should anyone care about Vim? It's complex, it's so old it's a fossil, and you like Kate/Leafpad/Geany/Gedit/Nano/Jed/Lime/Emacs/what-have-you, and the Linux world is cram-full of great text editors, so why bother with Vim? The main reason it is included in nearly all Linux...
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regex search
Regular expressions are a powerful tool for pattern matching and searching that every sys admin should know.

An Introduction to Regular Expressions for New Linux Users

Regular expressions are a powerful means for pattern matching and string parsing that can be applied in so many instances. With this incredible tool you can: Validate text input Search (and replace) text within a file Batch rename files Undertake incredibly powerful searches for files...
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Linux audio
Learn about MOC and SoX for playing audio files, and feh for viewing image files from the Linux command line in this tutorial.

3 Good Command-Line Audio and Graphics Apps for Linux

It is often faster to use command-line apps to play audio files and preview images than to futz around launching and using a graphical application, and you can use them in scripts. Come along to learn about MOC and SoX for playing audio files, and feh for viewing image files from the Linux command...
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Semicode OS
If the thought of having every tool you need to develop pre-installed on a Linux distribution appeals to you, you should check out SemiCode OS.

SemiCode OS Might Be Your Next Development Platform

One thing about Linux is that it’s very coder-friendly. Why? Simple: Nearly any developer can have every tool they need at their fingertips with ease and little to no cost. Tools like gcc, make, Bluefish, Atom, vi, emacs… the list goes on and on and on.Many of these tools are ready to serve, via a...
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CentOS
Get reliable up-to-date packages for CentOS from the Software Collections repository, EPEL, and Remi.

Best Third-Party Repositories for CentOS

Red Hat Enterprise Linux, in the grand tradition of enterprise software vendors, packages and supports old mold long after it should be dead and buried. They don't do this out of laziness, but because that is what their customers want. A lot of businesses view software the same way they see...
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Shorewall
Shorewall is an open source firewalling tool that makes the task of network security easier.

An Introduction to the Shorewall Firewall Tool

Linux is well known for being a highly secure platform. One of the reasons for said security is the Netfilter system. For those that don’t know, Netfilter is a framework, provided by the Linux kernel, that allows for various networking operations, such as packet filtering, network address...
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Arch Linux
The author's Arch Linux Xfce desktop.

Arch Linux: The Simple Linux

Arch Linux is called the simple Linux because it eschews the layers of abstraction and "helper" apps that come with so many Linux distributions. It as close to vanilla Linux as a packaged distribution can get. Consequently, you need to be more comfortable with do-it-yourself than with most modern...
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NTP
This tutorial series looks at configuration, monitoring, and securing of NTP, a critical element for the integrity of your infrastructure.

Arrive On Time With NTP -- Part 3: Secure Setup

Earlier in this series, I provided a brief overview of NTP and then looked at important NTP options to lock down your servers. In this article, I’ll look at some additional security concerns. Check out the pool According to the excellent site NTP Pool Project website, which points users at a “big...
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TrentaOS
Jack Wallen takes look below the surface of the lovely -- alpha stage -- TrentaOS.

TrentaOS Is an Elegant Desktop Linux with a Few Rough Edges

It appears we have another Linux desktop renaissance on our hands. Back in the late 1990s, it seemed like everyone was creating a new Linux distribution—each with its own unique take on the platform—until there were so many to choose from, one never knew where to begin. This time around, we have a...
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