Tags: SysAdmin

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dots
Paul Brown explains the various meanings and uses of the humble dot for Linux shell commands.

Linux Tools: The Meaning of Dot

Let's face it: writing one-liners and scripts using shell commands can be confusing. Many of the names of the tools at your disposal are far from obvious in terms of what they do (grep, tee and awk, anyone?) and, when you combine two or more, the resulting "sentence" looks like some kind of alien...
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How to Use Netcat to Quickly Transfer Files Between Linux Computers

There’s no shortage of software solutions that can help you transfer files between computers. However, if you do this very rarely, the typical solutions such as NFS and SFTP (through OpenSSH) might be overkill. Furthermore, these services are permanently open to receiving and handling incoming...
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How Enterprise IT Pros Can Contribute to Open Source Projects

Undoubtedly, your company uses open source software. But the powers that be might express reluctance when developers want to create or maintain projects on company time. Here is a roadmap to help you convince them otherwise—starting with an internal open source project office. Open source...
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Distributed Systems: A Quick and Simple Definition

The technology landscape has evolved into an always-on environment of mobile, social, and cloud applications where programs can be accessed and used across a multitude of devices. These always-on and always-available expectations are handled by distributed systems, which manage the inevitable...
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How ASLR Protects Linux Systems from Buffer Overflow Attacks

Address Space Layout Randomization (ASLR) is a memory-protection process for operating systems that guards against buffer-overflow attacks. It helps to ensure that the memory addresses associated with running processes on systems are not predictable, thus flaws or vulnerabilities associated with...
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5 Trends Transforming Digital and IT Operations Management

Heading into 2019, digitalization will accelerate business model innovation and drive the adoption of these emerging technologies for sustainable competitive advantage. Here’s a closer look at five technology trends that will change the way enterprises approach digital operations management in 2019...
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9 Cheat Sheets for Linux and Open Source

There are a ton of tasks you do every single day. Make it a little easier on yourself by downloading our cheat sheets. 9 Linux and open source cheat sheets Python 3.7 Beginner’s Cheat Sheet The Python programming language is known for its large community and diverse extension menu. Get acquainted...
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What Is DevSecOps?

DevOps was born from merging the practices of development and operations, removing the silos, aligning the focus, and improving efficiency and performance of both the teams and the product.  Security is a common silo in many organizations. Security’s core focus is protecting the organization, and...
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DNS (Domain Name Service): A Detailed, High-level Overview

How’s that for a confuding title?  In a recent email discussion, a colleague compared the Decentralized Identifier framework to DNS …suggesting they were similar.  I cautiously tended to agree but felt I had an overly simplistic understanding of DNS at a protocol level.  That email discussion led...
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migration
This series provides an overview of fundamentals to help you make the move to Linux; here we cover some common settings you’ll use on your desktop Linux system.

Migrating to Linux: Network and System Settings

Learn how to transition to Linux in this tutorial series from our archives. In this series, we provide an overview of fundamentals to help you successfully make the transition to Linux from another operating system. If you missed the earlier articles in the series, you can find them here: Part 1 -...
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