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Programming Leftovers

  • 6 Top Data Analysis Tools for Big Data

    Big Data is an all-inclusive term that refers to data sets so large and complex that they need to be processed by specially designed hardware and software tools. The data sets are typically of the order of tera or exabytes in size. These data sets are created from a diverse range of sources: sensors that gather climate information, publicly available information such as magazines, newspapers, articles. Other examples where big data is generated include purchase transaction records, web logs, medical records, military surveillance, video and image archives, and large-scale e-commerce. There is a heightened interest in Big Data and Big Data analysis and the implications they have for businesses. Big Data analysis is the process of examining huge quantities of data to find patterns, correlations, and other useful information that can help firms become more responsive to change, and to make better informed decisions. Big Data analysis can be performed with data mining software. However, the unstructured data sources used for big data analysis are not necessarily suitable for investigation by traditional data mining software.

  • 50 Years of Pascal

    Pascal was easy to teach, and it covered a wide spectrum of applications, which was a significant advantage over Algol, Fortran, and Cobol. The Pascal System was efficient, compact, and easy to use. The language was strongly influenced by the new discipline of structured programming, advocated primarily by E.W. Dijkstra to avert the threatening software crisis (1968).

  • How to use Django Serializers – Linux Hint

    Serializer is used in Django to convert the model instances or querysets into python supported data types that can be easily rendered into JSON, XML, or other formats. The deserialization can also be done by serializers to get back the original data from the serialized data. This feature is available in Django REST Framework. So, the users have to install this framework to use the serializers. Any webpage of the website may contain HTML, CSS, and data from the database tables. But the API does not understand these types of content, and it can understand the raw data only, that is, JSON data. How the serializers can be used to convert the model instance into JSON format has shown in this tutorial.

  • How to use queryset in django – Linux Hint

    Most of the web applications are implemented with the database now. queryset is used in the Django application to retrieve records by filtering or slicing or ordering the database table without changing the original data. The model used Django to create the table in the database. So, the knowledge of using the model in Django is necessary to understand the use of queryset. The main function of the queryset is to iterate the records of database tables by converting them into SQL queries. It can be used from the python command line or by writing the python script to display the browser’s output. The uses of queryset for retrieving data from a database table in different ways have been explained in this tutorial.

  • This Week In Rust: This Week in Rust 379 [Ed: The usual paradox of developing "openly" while requiring people to get an account with Microsoft and then use proprietary software of Microsoft, which attacks Free software.]

    This Week in Rust is openly developed on GitHub.

  • What Is BC in a Bash Script? – Linux Hint

    BC, which stands for Basic Calculator, is a command in Bash that is used to provide the functionality of a scientific calculator within a Bash script. This can be useful for scripting with various arithmentic use cases and scenarios. This article shows you how to use BC in a Bash script.

Security Leftovers

  • How often should I rotate my ssh keys?

    My story for today is about ssh and how even public keys, while much better than simple passwords, are still not a perfect solution.

    The danger is credential theft, which is a fancy way of saying “someone stole your private keys.” Back in the 1990s, that problem was pretty far from our minds; Windows 98 didn’t even have the concept of a separate administrator account, never mind the idea of app sandboxing or the inkling that someone might intentionally want to load malware onto your computer and encrypt all your files for ransomware. Those were the days when some people thought ActiveX controls (essentially loading .exe files from web sites) might be a good idea. Actually, maybe even a great idea as long as there was an “are you sure?” dialog box first.

  • 4 of the Best LastPass Alternatives

    LastPass has recently changed its free account usage policy to be only available on one device, and a lot of its users are not happy about it. If you are a LastPass Free user and are looking to switch, here are four great LastPass alternatives you should check out. These services reserve their pricing tiers for more advanced, business-oriented users while still leaving free users with a powerful set of features to safeguard their online accounts data.

  • Security updates for Thursday

    Security updates have been issued by Arch Linux (ansible-base, keycloak, mumble, and postgresql), Debian (firefox-esr and nodejs), Fedora (dotnet3.1, dotnet5.0, keylime, php-horde-Horde-Text-Filter, radare2, scap-security-guide, and wireshark), openSUSE (postgresql, postgresql13 and python-djangorestframework), Red Hat (Ansible, firefox, and thunderbird), Scientific Linux (firefox and thunderbird), SUSE (php7, postgresql-jdbc, python-cryptography, rpmlint, and webkit2gtk3), and Ubuntu (dnsmasq, linux, linux-aws, linux-aws-5.4, linux-azure, linux-azure-5.4, linux-gcp, linux-gcp-5.4, linux-gke-5.4, linux-gkeop, linux-gkeop-5.4, linux-hwe-5.4, linux-kvm, linux-oracle, linux-oracle-5.4, linux-raspi, linux-raspi-5.4, linux, linux-aws, linux-aws-hwe, linux-azure, linux-azure-4.15, linux-dell300x, linux-gcp, linux-gcp-4.15, linux-gke-4.15, linux-hwe, linux-kvm, linux-oracle, linux-raspi2, linux-snapdragon, linux, linux-aws, linux-azure, linux-gcp, linux-hwe-5.8, linux-kvm, linux-oracle, linux-raspi, linux, linux-aws, linux-kvm, linux-lts-xenial, linux-raspi2, linux-snapdragon, linux-oem-5.10, linux-oem-5.6, screen, and xterm).

  • Biden signs executive order calling for semiconductor supply chain review

    President Biden signed an executive order Wednesday addressing growing concern over a global semiconductor shortage hampering the production of goods like automobiles and smartphones.

    The White House’s executive order directs the federal government to conduct 100-day reviews of supply chains in four sets of products, including computer chips and large capacity batteries, like those used in electric vehicles, according to administration officials.

  • Biden Orders Review to Shore Up Supply Chain Resiliency

    On top of the 100-day review of the four key industries, Biden’s order will also direct yearlong reviews for six sectors: defense, public health, information technology, transportation, energy and food production.

    Biden said his administration will implement the recommendations as soon as they are available. “We're not going to wait for the review to be completed before we start closing the existing gaps,” he said.

  • Technology Executives Say All Evidence Points To Russia In Major Hack Of Computer Networks

    Smith told the committee that the true scope of the intrusions is still unknown because most victims are not legally required to disclose attacks unless they involve sensitive information about individuals.

  • Finnish IT Giant Hit with Ransomware Cyberattack [iophk: Windows TO]

    Norwegian business journal E24 reported the attack on Espoo, Finland-based TietoEVRY on Tuesday, claiming to have spoken with Geir Remman, a communications director at the company. Remman acknowledged technical problems with several services that TietoEVRY provides to 25 customers, which are “due to a ransom attack,” according to the report.

    Remman told E24 that the company considers the attack “a serious criminal act.” TietoEVRY turned off the unspecified services and infrastructure affected “as a preventative measure” until it can recover relevant data, and restart systems “in a controlled manner,” he said.

Ubuntu Leftovers

  • Ubuntu Aims For Higher Quality LTS Point Releases - Phoronix

    New restrictions will be in place beginning with Ubuntu 20.04.3 LTS this summer to try to enforce better quality releases with less regressions by enforcing better quality control. The change beginning with Ubuntu 20.04.3 LTS will require that stable release update (SRU) procedures are followed even for release blockers. This will require that every fix follows the same verification, regression analysis, and aging period process. The tighter quality controls will likely lead to slips in release targets if bugs are found in the release candidates for new point releases, as it will first need to go through the verification and aging process.

  • DFI Partners With Ubuntu For IoT Hardware, OTA Updates - Phoronix

    Most of you probably haven't heard of DFI much in nearly two decades since the days of their colorful "LanParty" motherboards that were well known at the time, but these days they are focused on the industrial computer industry and have now teamed up with Canonical to partake in the Ubuntu IoT Hardware Certification Partner Program. DFI is the first industrial computer vendor joining the Ubuntu IoT Hardware Certification Partner Program for Ubuntu-certified hardware focused on the Internet of Things and embracing over-the-air software updates.

  • What is MEC ? The telco edge.

    MEC, as ETSI defines it, stands for Multi-access Edge Computing and is sometimes referred to as Mobile edge computing. MEC is a solution that gives content providers and software developers cloud-computing capabilities which are close to the end users. This micro cloud deployed in the edge of mobile operators’ networks has ultra low latency and high bandwidth which enables new types of applications and business use cases. On top of that an application running on MEC can have real-time access to a subset of radio network information that can improve the overall experience.

Graphics: AMD, NVIDIA, and Microsoft's "Embrace"

  • AMD Radeon "Aldebaran" GPU Support Published For Next-Gen CDNA - Phoronix

    Last week I noted "GFX90A" appearing in the AMD LLVM back-end and now the AMDGPU Linux kernel driver patches have appeared for "Aldebaran" that appear to be the codename for the next-generation CDNA part making use of GFX90A. A set of 159 patches were just posted today for the Radeon Aldebaran enablement. The kernel patches indeed confirm this being GFX9 / GFX90A, putting it as CDNA rather than Navi/RDNA as is the case with GFX10. Aldebaran is likely the successor to the Radeon Instinct MI100. Other takeaways and signs of Aldebaran being the Arcturus (MI100) successor include XGMI support, among other features aligning it for HPC like RAS and watchdog support. Most exciting with GFX90A that we have seen is it will support full-rate FP64. Aldebaran has VCN 2.6 video encode capabilities.

  • AMDVLK 2021.Q1.4 Brings More Performance Tuning - Phoronix

    AMD has released AMDVLK 2021.Q1.4 as their newest snapshot of this open-source Radeon Vulkan driver for Linux systems. AMDVLK 2021.Q1.4 is quite a small release with updating against the Vulkan 1.2.169 header files and then more performance tuning for the game Mad Max. That's it in terms of official changes.

  • NVIDIA 460.56 Linux Driver Released With GeForce RTX 3060 Support - Phoronix

    NVIDIA has updated their 460 series Linux driver to provide launch-day support for the GeForce RTX 3060. The GeForce RTX 3060 is launching today -- assuming you can find one in stock. The RTX 3060 features 3584 CUDA cores, 1.78GHz base clock, and 12GB of GDDR6 video memory. We have not been provided with any review sample and as such no Linux benchmarks today -- at least there are the RTX 3060 Ti Linux benchmarks for those interested.

  • Nvidia GeForce RTX 3060 goes out today, new Linux driver released

    For the release of the hardware, it's probably going to be another "paper launch" as we fully expect stock of the GeForce RTX 3060 from NVIDIA to sell out pretty darn quickly just like all the other releases have done so. Thanks in part to high demand and scalpers continuing to buy up as much as they can to sell on for a profit - amongst other things. However, NVIDIA are trying to cut down on crypto miners using standard GPUs by limiting the hash rate of the cards through a mix of a "secure handshake between the driver, the RTX 3060 silicon, and the BIOS (firmware) that prevents removal of the hash rate limiter" (source) plus dedicated cards for miners. So hopefully in future we will see more cards available for standard consumers and gamers.

  • Lavapipe CPU-Based Vulkan Ported To Windows - Phoronix

    Getting this software-based Vulkan implementation working on Windows also included implementing the Windows Vulkan windowing subsystem integration (WSI) as the first Mesa Vulkan driver running on Windows (still out-of-tree is also the work getting RADV on Windows).