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today's leftovers

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Misc
  • IFStile – Iterated Function Systems – visualize substitution tilings

    One of the ways to generate fractals is using the Iterated Function System (IFS).

    In mathematical terms the system is a finite set of contraction maps w_i for i=1, 2, …, N, each with a contractivity factor s<1, which map a compact metric space onto itself. It’s the basis for fractal image compression techniques.

    IFS fractals, as they are known, can be of any number of dimensions, but are often calculated and drawn in 2D. The fractal is made up of the union of several copies of itself, each copy being transformed by a function (hence “function system”). The canonical example is the Sierpiński triangle. Substitution tilings are great source of fractal shapes, due to their recursive nature. This method can generate regular-looking fractals as well as non-geometric fractals.

  • OpenComic – Open Source Cross-platform Comic and Manga Reader

    OpenComic is an open-source comic and manga reader that works on Windows, mac OS, and Linux.

  • FPgM report: 2019-32

    Here’s your report of what has happened in Fedora Program Management this week.

    I have weekly office hours in #fedora-meeting-1. Drop by if you have any questions or comments about the schedule, Changes, elections, or anything else.

  • West Coast Hackfest – Summary

    This year, I helped organize West Coast Hackfest with my stalwart partner and friend Teresa Hill in Portland – with assistance from Kristi Proggi. Big thanks to them for helping to make this a success!

    Primarily the engagement hackfest was focused on the website content. The website is showing its age and needs both a content update and a facelift. Given our general focus on engagement, we want to re-envision the website to drive that engagement as a medium for volunteer capture, identity, and fundraising.

    [...]

    I would like to thank the GNOME Foundation for providing the resources and infrastructure to have us all here.

  • Fontwork challenge

    I plan to update all kind of visual aspects in LibreOffice (6.4), if you are interested in feedback, help, support, you are welcome.

    Download the Fontwork.odp file where all 40 existing fontwork’s are shown. Play around with them and submit the updated file. Nothing is easier to contribute back and have fun with LibreOffice.

  • How to Increment and Decrement Variable in Bash (Counter)
  • Multiple Examples Of ls Command In Linux
  • Multiple Examples Of netcat Or nc Or ncat Command
  • [Old] Microsoft to Pay $25 Million to Settle Foreign Bribery Probe

    The computer behemoth settled the alleged Foreign Corrupt Practices Act violations by four Microsoft subsidiaries in separate agreements with the SEC and the U.S. Department of Justice.

    Microsoft, as part of its settlement with the SEC, neither admitted nor denied the misconduct described by the agency.

More in Tux Machines

Open Source platforms to now help students

The technical institutes in the State are now asked to use free and open-source software developed by a team, headed by the Ministry of Human Resource Development (MHRD). The MHRD has also promoted their FOSSEE (Free and Open Source Software for Education) projects which uses tools so that students can easily use them. Recently, the MHRD made a decision that FOSSEE should be promoted amongst the student community so they can aim at reducing dependency on proprietary software in educational institutions. The MHRD Minister Ramesh Pokhriyal Nishank too took to twitter urging students to use FLOSS tools in various languages to meet academic and research requirements. Read more

today's howtos

  • A guided tour of Linux file system types

    While it may not be obvious to the casual user, Linux file systems have evolved significantly over the last decade or so to make them more resistant to corruption and performance problems. Most Linux systems today use a file system type called ext4. The “ext” part stands for “extended” and the 4 indicates that this is the 4th generation of this file system type. Features added over time include the ability to provide increasingly larger file systems (currently as large as 1,000,000 TiB) and much larger files (up to 16 TiB), more resistance to system crashes and less fragmentation (scattering single files as chunks in multiple locations) which improves performance.

  • Testing the Linux Malware Detect.
  • Kushal Das: Remember to mark drive as removable for tails vm install

    If you are installing Tails into a VM for testing or anything else, always remember to mark the drive as a removable USB drive. Otherwise, the installation step will finish properly, but, you will get errors like the following screenshot while booting from the drive.

  • How to Set DNS Nameservers on Ubuntu 18.04

Security Leftovers

  • NSA Researchers Talk Development, Release of Ghidra SRE Tool

    The National Security Agency released its classified Ghidra software reverse-engineering (SRE) tool as open source to the cybersecurity community on April 4. NSA researchers Brian Knighton and Chris Delikat shared how Ghidra was built and the process of releasing it at Black Hat 2019. Ghidra is a framework developed by the NSA’s Research Directorate for the agency’s cybersecurity mission. It’s designed to analyze malicious code to give security pros a better understanding of potential vulnerabilities in their networks and systems.

  • Linux Is Being Hit with Zero-Day Exploits/ Zero-Day Attacks [Ed: This is not news. If you have a system that is unpatched for months, despite many warnings, it is a risk, no matter the OS/kernel.]

    It was once the popular opinion that Linux was immune to zero-day exploits. However, even before the Equifax exploit, vulnerabilities were found in Linux distributions like Fedora and Ubuntu. In particular, back in 2016, a security researcher discovered that you could exploit a Linux system by playing a specific music file. Then, in 2017, a group of attackers used Struckshock vulnerability to carry on the attack on Equifax. These zero-day attacks are Advanced Persistent Attacks that exploit recently discovered vulnerabilities. Read on to learn more about what are zero-day exploits and how they can affect a Linux system.

  • Intel, Google, Microsoft, and Others Launch Confidential Computing Consortium for Data Security

    Major tech companies including Alibaba, Arm, Baidu, IBM, Intel, Google Cloud, Microsoft, and Red Hat today announced intent to form the Confidential Computing Consortium to improve security for data in use.

  • Intel, Google, Microsoft, and others launch Confidential Computing Consortium for data security

    Major tech companies including Alibaba, Arm, Baidu, IBM, Intel, Google Cloud, Microsoft, and Red Hat today announced intent to form the Confidential Computing Consortium to improve security for data in use. Established by the Linux Foundation, the organization plans to bring together hardware vendors, developers, open source experts, and others to promote the use of confidential computing, advance common open source standards, and better protect data. “Confidential computing focuses on securing data in use. Current approaches to securing data often address data at rest (storage) and in transit (network), but encrypting data in use is possibly the most challenging step to providing a fully encrypted lifecycle for sensitive data,” the Linux Foundation said today in a joint statement. “Confidential computing will enable encrypted data to be processed in memory without exposing it to the rest of the system and reduce exposure for sensitive data and provide greater control and transparency for users.”

Linux-driven modules to showcase new MediaTek AIoT SoCs

Innocomm is prepping an “SB30 SoM” with the new quad -A35 MediaTek i300 followed by an “SB50 SoM” with an AI-equipped, octa-core -A73 and -A53 MediaTek i500. Both modules ship with Linux/Android evaluation kits. Innocomm, which has produced NXP-based compute modules such as the i.MX8M Mini driven WB15 and i.MX8M powered WB10, will soon try on some MediaTek SoCs for size. First up is an SB30 SoM due to launch in October that will run Linux or Android on MediaTek’s 1.5GHz, quad-core, Cortex-A35 based MediaTek i300 (MT8362) SoC. In November, the company plans to introduce an SB50 SoM based on the MediaTek i500 (MT8385). Read more