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today's leftovers

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  • When was the last time you used Windows?

    Are friends and family constantly asking you to troubleshoot issues with their Windows or Mac device? Being the resident support technician in your home is an important job. Like any responsible technology steward, you are going to try your best to help out. However, it might be quite a challenge if it has been a while since you last used such an operating system.

    How long has it been since you last used Windows? Before using Linux, were you primarily a Mac user? Or, are you using Windows or Mac now either at home or work?

    Take our poll by selecting the Windows version you last remember using. If the term, "windows" only reminds you of those glass panels that let sunlight inside, you are probably a long-time Linux user.

    Leave us a comment and share your story about how you started using Linux. 

  • Attempting to install Linux on a new laptop, a follow-up

    I recently detailed my attempts to install Linux as an alternative boot an SD card in a new Dell laptop. Those attempts failed. See Attempting to install Linux on a new laptop for the details.

    Microsoft has continued in their usual way and notified me last week that the current feature update of Windows on that laptop would soon be unsupported and urged me to update to the latest version.

    However, that proved impossible. In spite of removing most of the software installed on the machine, Windows was incapable of cleaning up enough disk space to allow the installation of Windows 10 version 1903 to proceed. The installed 32GB eMMC drive simply is no longer large enough to allow the updates to install. This was true even when I manually downloaded the update and tried to install from an external drive.

    It is remotely possible wiping the hard drive and performing a clean install might have worked, but the prospect of being forced to do so every year was not appealing. So being forced to choose between running an out of date version of Windows or wiping the hard drive and installing Linux, I chose to try the latter.

  • Going Linux #377 · Listener Feedback

    Our first giveaway. In this episode: hidden gems, Banshee abandoned, FreeOffice issues, back to Ubuntu MATE for accessibility, and NTP and hardware clock. 

  • Test and Code: 88: Error Monitoring, Crash Reporting, Performance Monitoring - JD Trask

    Tools like error monitoring, crash reporting, and performance monitoring are tools to help you create a better user experience and are fast becoming crucial tools for web development and site reliability. But really what are they? And when do you need them?

    You've built a cool web app or service, and you want to make sure your customers have a great experience.

    You know I advocate for utilizing automated tests so you find bugs before your customers do. However, fast development lifecycles, and quickly reacting to customer needs is a good thing, and we all know that complete testing is not possible. That's why I firmly believe that site monitoring tools like logging, crash reporting, performance monitoring, etc are awesome for maintaining and improving user experience.

    John-Daniel Trask, JD, the CEO of Raygun, agreed to come on the show and let me ask all my questions about this whole field.

  • how to detect chef
  • Linux Command Cheat Sheet: Download For Free
  • Porting Storm to Python 3

    We released Storm 0.21 on Friday (the release announcement seems to be stuck in moderation, but you can look at the NEWS file directly). For me, the biggest part of this release was adding Python 3 support.

    Storm is a really nice and lightweight ORM (object-relational mapper) for Python, developed by Canonical. We use it for some major products (Launchpad and Landscape are the ones I know of), and it’s also free software and used by some other folks as well. Other popular ORMs for Python include SQLObject, SQLAlchemy and the Django ORM; we use those in various places too depending on the context, but personally I’ve always preferred Storm for the readability of code that uses it and for how easy it is to debug and extend it.

    It’s been a problem for a while that Storm only worked with Python 2. It’s one of a handful of major blockers to getting Launchpad running on Python 3, which we definitely want to do; stoq ended up with a local fork of Storm to cope with this; and it was recently removed from Debian for this and other reasons. None of that was great. So, with significant assistance from a large patch contributed by Thiago Bellini, and with patient code review from Simon Poirier and some of my other colleagues, we finally managed to get that sorted out in this release.

More in Tux Machines

Debian and Ubuntu Leftovers

  • Ritesh Raj Sarraf: Bpfcc New Release

    bpfcc version 0.11.0 has been uploaded to Debian Unstable and should be accessible in the repositories by now. After the 0.8.0 release, this has been the next one uploaded to Debian.

  • Utkarsh Gupta: Joining Debian LTS!

    Back during the good days of DebConf19, I finally got a chance to meet Holger! As amazing and inspiring a person he is, it was an absolute pleasure meeting him and also, I got a chance to talk about Debian LTS in more detail. [...] I had almost no idea what to do next, so the next month I stayed silent, observing the workflow as people kept committing and announcing updates. And finally in September, I started triaging and fixing the CVEs for Jessie and Stretch (mostly the former). Thanks to Abhijith who explained the basics of what DLA is and how do we go about fixing bugs and then announcing them. With that, I could fix a couple of CVEs and thanks to Holger (again) for reviewing and sponsoring the uploads! :D

  • Ubucon Europe 2019 in local media

    News from the new Ubuntu distribution, the exploration of the several platforms and many “how to”, rule the 4-days agenda where the open source and open technologies are in the air. The Olga Cadaval Cultural centre in Sintra, is the main stage of a busy agenda filled with several talks and more technical sessions, but at Ubucon Europe there’s also room for networking and cultural visits, a curious fusion between spaces full of history, like the Pena Palace or the Quinta da Regaleira, and one of the youngest “players” in the world of software. For 4 days, the international Ubuntu Community gathers in Sintra for an event open to everyone, where the open source principles and open technology are dominating. The Ubucon Europe Conference begun Thursday, October 10th, and extends until Sunday, October 13th, keeping an open doors policy to everyone who wants to Afterall, what is the importance of Ubucon? The number of participants, which should be around 150, doesn’t tell the whole story of what you can learn during these days, as the SAPO TEK had the opportunity to check this morning. Organised by the Ubuntu Portugal Community, with the National Association for Open Software, the Ubuntu Europe Federation and the Sintra Municipality, the conference brings to Portugal some of the biggest open source specialists and shows that Ubuntu is indeed alive, even if not yet known by most people, and still far from the “world domain” aspired by some.

Devices/Embedded: Win Enterprises and Raspberry Pi 4

  • Win Enterprises unveils Atom-based LAN gateway and compact SBC

    Win Enterprises unveiled a fanless “PL-82000” networking gateway with 6x GbE and 2x SFP ports based on an Atom C3000. It also launched a Raspberry Pi sized “MB-5000” SBC that runs Ubuntu or Win 10 on Intel Apollo Lake. We tend to forget Win Enterprises because as its name suggests, the company typically sticks to Windows-supported products. Yet, they have increasingly produced barebones products without listed OS support, such as the new PL-82000 networking appliance, as well as Linux supported systems such as the MB-5000 SBC announced back in June. (In 2017, we covered an Intel Bay Trail based MB-80580 SBC and Win IoT-380 Gateway with Linux support.)

  • Raspberry Pi 4 PCI Express: It actually works! USB3, SATA… GPUs?

    Recently, Tomasz Mloduchowski posted a popular article on his blog detailing the steps he undertook to get access to the hidden PCIe interface of Raspberry Pi 4: the first Raspberry Pi to include PCIe in its design. After seeing his post, and realizing I was meaning to go buy a Raspberry Pi 4, it just seemed natural to try and replicate his results in the hope of taking it a bit further. I am known for Raspberry Pi Butchery, after all.

  • Raspberry Pi 4 B+ - PCI Express

    Why did I do it? Because I wanted to see if it can be done. Because Raspberry Pi 4 might be the cheapest device that is PCIe capable after a relatively minor modification (if I didn't lift the capacitors when desoldering the VL805, this is literally 12 soldering points). That, in turn, can be quite handy for developing own PCIe cores for various FPGA based experiments.

    I'm sharing it to allow people to learn from this - and to dispel the myth that PCIe is somehow out of reach of hobbyists due to some concerns over signal integrity or complexities. Stay tuned for more Pi4/PCIe experimentation!

OSS: Odoo, WordPress, MongoDB vs. MySQL

  • What's New in Odoo 13?

    Fast, Simple and Effective Business Management- this is the motto of Odoo, the leading open source ERP of the globe. And this is what makes Odoo the prominent and most favorite choice among business enterprises. With the release of Odoo 13, the open-source ERP has become all more fit and robust to meet the diversified needs of businesses. With Odoo 13 users can go along with better designs and customizations. With each version release, Odoo makes it a point to bring in major and minor improvements in the application, alongside a set of new features for improving the user interface and functionality of the user. The users worth 3.4 million is the evidence of Odoo being the finest application for business management.

  • Becoming Better Digital Citizens Through Open Source

    The WordPress Project is on a mission to democratize publishing. As WordPress empowers more people to participate in the digital space, we have the opportunity to make sure that everyone can participate safely and responsibly. Today marks the start of Digital Citizenship Week. We are going to share how open source can be used as a tool for learners (regardless of age) to practice and model the essential parts of being a good digital citizen. [...] Digital Citizenship is for all age groups. Anyone who uses the internet on a computer, mobile device or a TV is a digital citizen. You don’t have to be tech-savvy already, maybe you are taking your first steps with technology. Digital Citizenship Week is a chance to reflect together on our impact on the digital world. It can help us to make our consumption more considered and our interaction friendlier. It enables us to make a positive difference to those around us. All of us can strive (or learn) to become better digital citizens. It can be affected by the access those teaching have had to digital skills and good practice. Adult education classes and community tech hubs play a part in basic tech skill development. Unfortunately, these are not always accessible to those in less populated geographic locations.  Open source communities like WordPress already make a difference in encouraging the principles of digital citizenship, from sharing tech skills to improving security knowledge. They give people an opportunity to learn alongside their peers and many of the resources are available regardless of location, resources, or skills.

  • MongoDB vs. MySQL: How to choose

    During the dot-com bubble in the 1990s, one common software stack for web applications was LAMP, which originally stood for Linux (OS), Apache (web server), MySQL (relational database), and PHP (server programming language). MySQL was the preferred database mostly because it was free open source and had good read performance, which fit well with “Web 2.0” apps that dynamically generated sites from the database. Later the MEAN stack, which stood for MongoDB (document database), Express (web server), AngularJS (front-end framework), and Node.js (back-end JavaScript runtime), came to prominence. The MEAN stack was attractive, among other reasons, because the only language you needed to know was JavaScript. It also needed less RAM than an equivalent LAMP stack.

Security: XML External Entity (XXE) Example and the Latest Patches

  • XML External Entity (XXE) Example

    According to OWASP, an XML External Entity attack is a type of attack against an application that parses XML input. This attack occurs when XML input containing a reference to an external entity is processed by a weakly configured XML parser. This attack may lead to the disclosure of confidential data, denial of service, server side request forgery, port scanning from the perspective of the machine where the parser is located, and other system impacts. If a parser accepts unsanitized XML, we can take advantage of that and send our own crafted external XML payload to exploit our target. This post won’t be long so let’s get into it.

  • Security updates for Monday

    Security updates have been issued by Arch Linux (chromium, sdl, and unbound), Debian (clamav, libdatetime-timezone-perl, openssl, tcpdump, and tzdata), Fedora (cutter-re, jackson-annotations, jackson-bom, jackson-core, jackson-databind, jackson-parent, libapreq2, ming, opendmarc, radare2, and thunderbird), openSUSE (chromium), Oracle (kernel), and SUSE (axis, jakarta-commons-fileupload, kernel, sles12sp3-docker-image, sles12sp4-image, system-user-root, and webkit2gtk3).