Ubuntu Security Podcast

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Linux Journal Ceases Publication: An Awkward Goodbye 8 augusti, 2019
by Kyle Rankin IMPORTANT NOTICE FROM LINUX JOURNAL, LLC: On August 7, 2019, Linux Journal shut its doors for good. All staff were laid off and the company is left with no operating funds to continue in any capacity. The website will continue to stay up for the next few weeks, hopefully longer for archival […]
Oops! Debugging Kernel Panics 7 augusti, 2019
by Petros Koutoupis A look into what causes kernel panics and some utilities to help gain more information. Working in a Linux environment, how often have you seen a kernel panic? When it happens, your system is left in a crippled state until you reboot it completely. And, even after you get your system back […]
Loadsharers: Funding the Load-Bearing Internet Person 7 augusti, 2019
by Eric S. Raymond The internet has a sustainability problem. Many of its critical services depend on the dedication of unpaid volunteers, because they can't be monetized and thus don't have any revenue stream for the maintainers to live on. I'm talking about services like DNS, time synchronization, crypto libraries—software without which the net and […]
Documenting Proper Git Usage 7 augusti, 2019
by Zack Brown Jonathan Corbet wrote a document for inclusion in the kernel tree, describing best practices for merging and rebasing git-based kernel repositories. As he put it, it represented workflows that were actually in current use, and it was a living document that hopefully would be added to and corrected over time. The inspiration […]
Understanding Python's asyncio 7 augusti, 2019
by Reuven M. Lerner How to get started using Python's asyncio. Earlier this year, I attended PyCon, the international Python conference. One topic, presented at numerous talks and discussed informally in the hallway, was the state of threading in Python—which is, in a nutshell, neither ideal nor as terrible as some critics would argue. A […]
RV Offsite Backup Update 7 augusti, 2019
by Kyle Rankin Having an offsite backup in your RV is great, and after a year of use, I've discovered some ways to make it even better. Last year I wrote a feature-length article on the data backup system I set up for my RV (see Kyle's "DIY RV Offsite Backup and Media Server" from […]
Another Episode of "Seems Perfectly Feasible and Then Dies"--Script to Simplify the Process of Changing System Call Tables 7 augusti, 2019
by Zack Brown David Howells put in quite a bit of work on a script, ./scripts/syscall-manage.pl, to simplify the entire process of changing the system call tables. With this script, it was a simple matter to add, remove, rename or renumber any system call you liked. The script also would resolve git conflicts, in the […]
Experts Attempt to Explain DevOps--and Almost Succeed 7 augusti, 2019
by Bryan Lunduke What is DevOps? How does it relate to other ideas and methodologies within software development? Linux Journal Deputy Editor and longtime software developer, Bryan Lunduke isn't entirely sure, so he asks some experts to help him better understand the DevOps phenomenon. The word DevOps confuses me. I'm not even sure confuses me […]
DNA Geometry with cadnano 7 augusti, 2019
by Joey Bernard This article introduces a tool you can use to work on three-dimensional DNA origami. The package is called cadnano, and it's currently being developed at the Wyss Institute. With this package, you'll be able to construct and manipulate the three-dimensional representations of DNA structures, as well as generate publication-quality graphics of your […]
Running GNOME in a Container 7 augusti, 2019
by Adam Verslype Containerizing the GUI separates your work and play. Virtualization has always been a rich man's game, and more frugal enthusiasts—unable to afford fancy server-class components—often struggle to keep up. Linux provides free high-quality hypervisors, but when you start to throw real workloads at the host, its resources become saturated quickly. No amount […]

Build a xylophone-playing robot | HackSpace magazine #22 23 augusti, 2019
HackSpace magazine issue 22 is out now, and our favourite tutorial this month will show you how to make this, a xylophone-playing robot! Build a glockenspiel-playing robot with HackSpace magazine Why spend years learning to play a musical instrument when you could program a robot to do it for you? This month HackSpace magazine, we […]
It’s GCSE results day! 22 augusti, 2019
Today is GCSE results day, and with it comes the usual amount of excitement and trepidation as thousands of young people in the UK find out whether they got the grades they wanted. So here’s a massive CONGRATULATIONS from everyone at the Raspberry Pi Foundation to all the students out there who have worked so […]
Retrofit a vintage camera flash with a Raspberry Pi Camera Module 21 augusti, 2019
Wanting to break from the standard practice of updating old analogue cameras with digital technology, Alan Wang decided to retrofit a broken vintage camera flash with a Raspberry Pi Zero W to produce a video-capturing action cam. Raspberry Pi Zero Flash Cam Video Test Full story of this project: https://www.hackster.io/alankrantas/raspberry-pi-zero-flash-cam-359875 By hacking a somewhat gnarly […]
Raspberry Pi summer projects with The MagPi magazine 20 augusti, 2019
Take your Raspberry Pi outside for some fun outdoor making with The MagPi magazine’s summer projects feature, available to read now. Right now. Right this second. Go read it…but read the rest of this blog post first. Thanks. #analytics Digital making outdoors Sure, there may be a few obstacles in your way whenever you try […]
Build your own Raspberry Pi night vision camera 19 augusti, 2019
A Raspberry Pi Zero W, Pimoroni HyperPixel screen, and Raspberry Pi IR Camera Module are all you need to build this homemade night vision camera. How to build a night vision camera How to build a night vision camera, video showing the process and problems that I came across when building this camera Raspberry Pi night […]
Scratch 3 Desktop for Raspbian on Raspberry Pi 16 augusti, 2019
You can now install and use Scratch 3 Desktop for Raspbian on your Raspberry Pi! Scratch 3 Scratch 3 was released in January this year, and since then we and the Scratch team have put lots of work into creating an offline version for Raspberry Pi. The new version of Scratch has a significantly improved […]
Code your own 2D shooting gallery in Python | Wireframe issue 20 15 augusti, 2019
Raspberry Pi’s own Rik Cross shows you how to hit enemies with your mouse pointer as they move around the screen. Clicky Clicky Bang Bang Shooting galleries have always been a part of gaming, from the Seeburg Ray-O-Lite in the 1930s to the light gun video games of the past 40 years. Nintendo’s Duck Hunt […]
10,000 sticker pack giveaway 14 augusti, 2019
UPDATE: all 10,000 sticker packs have now been claimed. We honestly didn’t think these would go so quickly. If you’re in a different time zone to us and reading this later during your day, we’re sorry you missed out. We’ll see whether we can run another giveaway in the future at a time that’s better […]
Build a Raspberry Pi music box with Sally Le Page 13 augusti, 2019
Connecting buttons to the GPIO pins of your Raspberry Pi instantly opens up your digital making to the world of clicky funtimes. Our Music Box project teaches you how to connect several buttons to your Raspberry Pi and write code to make them trigger cool sound effects. It’s fun. It’s easy. And we roped Sally […]
Real-time train station departure board 12 augusti, 2019
All across the UK, you’ll find train departure boards on station platforms that look like this: They’ve looked this way for as long as I can remember (before they were digital dot-matrix displays, they were made from those flappy bits of plastic with letters of the alphabet and numbers printed on them, which whirled round […]

How to Install FreeRADIUS and daloRADIUS on Ubuntu 18.04 LTS 23 augusti, 2019
FreeRADIUS is a free and open-source client/server protocol that provides centralized network authentication on systems and daloRADIUS is a web-based application for managing RADIUS server. In this tutorial, I will explain step by step how to install FreeRADIUS and Daloradius on Ubuntu 18.04 LTS.
How to Protect Zip file with Password on Ubuntu 18.04 LTS 22 augusti, 2019
Protect your compressed zip file with password on Linux is pretty easy. In this tutorial, we will show you how to protect zip file with a password using the command line and GUI on Ubuntu 18.04.
How to Install Grav CMS with Nginx and Let's Encrypt on Ubuntu 18.04 LTS 21 augusti, 2019
Grav is a fast, simple, and flexible, file-based CMS and platform. This tutorial will walk you through the Grav CMS installation procedure on a fresh Ubuntu 18.04 server using Nginx as the webserver and we will secure the website with a Let's Encrypt SSL certificate.
How to convert HTML to PDF with HTMLDoc on Debian 10 20 augusti, 2019
HTMLDOC is an open-source program that can be used to convert HTML and Markdown source files to PostScript and PDF files. In this tutorial, we are going to explain how to install HTMLDOC on Debian 10 and convert an HTML file to pdf.
How to Install and Configure OpenShift Origin PaaS Server on Ubuntu 19 augusti, 2019
OpenShift is a free and open-source Platform-as-a-Service developed by Red Hat. It is used to develop, host and scale applications in the cloud environment. OpenShift provides support for lots of languages like Java EE6, Ruby, PHP, Python, Perl, MongoDB, MySQL, and PostgreSQL.
How to Install GitBucket with Nginx on Ubuntu 18.04 LTS 16 augusti, 2019
GitBucket is a free and open-source Git platform powered by Scala with Github API compatibility. In this tutorial, we will learn how to install and configure GitBucket on Ubuntu 18.04 server.
How to Install Pico CMS with Nginx and Let's Encrypt on CentOS 7 15 augusti, 2019
Pico is an open-source simple and fast flat-file CMS written in PHP. In this tutorial, we will install Pico CMS with Nginx on CentOS 7 system.
How to install NetBox Network Documentation and Management Tool on Ubuntu 18.04 LTS 14 augusti, 2019
NetBox is a free and opensource web application software that can be used to manage and document computer networks. In this tutorial, we will explain how to install NetBox on Ubuntu 18.04 server.
Linux rename Command Tutorial for Beginners (with Examples) 13 augusti, 2019
If you work with files on the command line in Linux, renaming files is one of the most frequent tasks you may find yourself involved in. We've already discussed the mv command that lets you do this. And here, in this tutorial, we will discuss another such tool, dubbed rename.
Install Automad CMS with Nginx and Let's Encrypt SSL on Debian 10 12 augusti, 2019
Automad is a file-based content management system (CMS) and a template engine written in PHP. In this tutorial, we will go through the Automad CMS installation and setup on Debian 10 (buster) system by using NGINX as a web server.

Outsourcing to Microsoft and Openwashing as a Service (OaaS): This is the Linux Foundation in 2019 24 augusti, 2019
The concept of "Open" at the Linux Foundation gives room for thought; are things really being opened or mostly marketed as "Open" and, if so, is the Foundation more like a marketing agency?
From ProdOps to DevOps: Surviving and thriving 24 augusti, 2019
A reluctant former ProdOps pro's story of learning to love DevOps.
How to Replace Spaces in Filenames with Underscores on the Linux Shell 24 augusti, 2019
In this article, we will explain two ways for you to convert all spaces in filenames to underscores, simply through the command line.
The lifecycle of Linux kernel testing 24 augusti, 2019
In Continuous integration testing for the Linux kernel, I wrote about the Continuous Kernel Integration (CKI) project and its mission to change how kernel developers and maintainers work. This article is a deep dive into some of the more technical aspects of the project and how all the pieces fit together.read more
How to Install FreeRADIUS and daloRADIUS on Ubuntu 18.04 LTS 24 augusti, 2019
FreeRADIUS is a free and open-source client/server protocol that provides centralized network authentication on systems and daloRADIUS is a web-based application for managing RADIUS server. In this tutorial, I will explain step by step how to install FreeRADIUS and Daloradius on Ubuntu 18.04 LTS.

#OSSUMMIT: Confidential Computing Consortium Takes Shape to Enable Secure Collaboration
At the Open Source Summit in San Diego, California on August 21, the Linux Foundation announced the formation of the Confidential Computing Consortium. Confidential computing is an approach using encrypted data that enables organizations to share and collaborate, while still maintaining privacy.
Outsourcing to Microsoft and Openwashing as a Service (OaaS): This is the Linux Foundation in 2019
The concept of "Open" at the Linux Foundation gives room for thought; are things really being opened or mostly marketed as "Open" and, if so, is the Foundation more like a marketing agency?
From ProdOps to DevOps: Surviving and thriving
A reluctant former ProdOps pro's story of learning to love DevOps.
How to Replace Spaces in Filenames with Underscores on the Linux Shell
In this article, we will explain two ways for you to convert all spaces in filenames to underscores, simply through the command line.
The lifecycle of Linux kernel testing
In Continuous integration testing for the Linux kernel, I wrote about the Continuous Kernel Integration (CKI) project and its mission to change how kernel developers and maintainers work. This article is a deep dive into some of the more technical aspects of the project and how all the pieces fit together.read more
How to Install FreeRADIUS and daloRADIUS on Ubuntu 18.04 LTS
FreeRADIUS is a free and open-source client/server protocol that provides centralized network authentication on systems and daloRADIUS is a web-based application for managing RADIUS server. In this tutorial, I will explain step by step how to install FreeRADIUS and Daloradius on Ubuntu 18.04 LTS.
How To Configure, Create, Scan, List, Query, Rename, Delete OracleASM Disk in Linux
Learn, how to configure raw disk as an ASM disk in Linux.
The Linux kernel: Top 5 innovations
The word innovation gets bandied about in the tech industry almost as much as revolution, so it can be difficult to differentiate hyperbole from something that’s actually exciting. The Linux kernel has been called innovative, but then again it’s also been called the biggest hack in modern computing, a monolith in a micro world. Setting […]
How to Delete MySQL Users Accounts
MySQL allows you to create multiple user accounts and grant appropriate privileges so that users can connect and manage databases. If the user account is no longer needed, it is a good idea to either remove the user privileges or to completely delete the user account. This tutorial explains how to delete MySQL/MariaDB user accounts.
7 Excellent R Natural Language Processing Tools
Natural language processing (NLP) is a set of techniques for using computers to detect in human language the kinds of things that humans detect automatically.
How to Change Bulk File Permissions Recursively from “abc” to “xyz” in Linux
As Linux administrator, we always use chmod command to change file permissions in Linux. It may happens many times in a day, it depends on your environment size and team size. In this tutorial , learn how to change bulk file permissions recursively in Linux.
IBM Open Sources Its Workhorse Power Chip Architecture
RISC-V now has formidable competition from an architecture with a long track record in servers and supercomputers.
Install ILIAS E-Learning LMS on Ubuntu
Install ILIAS E-Learning LMS on Ubuntu 16.04. This guide explains how to install and setup ILIAS Learning Management System with PHP 7.1, Apache and MySQL 5.7
Linux Gaming FINALLY Doesn't SUCK!
A video about gaming on Linux.
A muggle's guide to AWK arrays: 3
An AWK array can be something like a lookup table, held in memory. You can use that lookup table for data operations on another file, and in this post I demonstrate reformatting and table joining.
What piece of advice had the greatest impact on your career in DevOps?
I love learning the what, why, and how of new open source projects, especially when they gain popularity in the DevOps space. Classification as a "DevOps technology" tends to mean scalable, collaborative systems that go across a broad range of challenges—from message bus to monitoring and back again. There is always something new to explore, […]
10 basic Linux commands you need to know
Out of the hundreds of possible Linux commands you could learn, here are the ten basic ones you really need to know.
Gammy: Adaptive Screen Brightness Tool For Linux
Gammy, an adaptive screen brightness GUI tool that that was originally only available for Microsoft Windows, was ported to Linux (X11 only) recently.
AlertManager and Prometheus Complete Setup on Linux
When using modern monitoring solutions, we often want to be alerted when something goes wrong in our infrastructure. We may want to receive an email if one of our hosts goes down. Or we may want to receive a message on our team Slack if HTTPS certificates are about to expire for example. In your […]
Microsoft acquires jClarity for optimizing Java workloads on Azure
JClarity is a key contributor to the AdoptOpenJDK project, which is building binaries of OpenJDK for a variety of platforms, including Linux and Windows. JClarity provides software performance analytics and tuning which they say is "driven by machine learning," and which is aimed at trying to solve Java performance problems on the desktop and in […]