Linux
Audiocasts/Shows: LINUX Unplugged, Homelab, and Tabliss
Submitted by Roy Schestowitz on Wednesday 27th of January 2021 12:21:08 AM Filed under

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Eating the License Cake | LINUX Unplugged 390
Successful open-source projects all seem to struggle with one major gorilla. Who it is, and what their options are now.
Special Guests: Drew DeVore and Jonathan Corbet.
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The Raspberry Pi is a great way to get started with Homelab! (How to Homelab Episode 4)
If you're looking for a low-cost way to enter into the world of Homelab, look no further than the Raspberry Pi! These small computers are plenty powerful to run quite a few Homelab apps, and in this video I give you my thoughts on why that is. In a future video, we'll explore running some apps on the Raspberry Pi but I wanted to create this video as an introduction to the concept of using a Pi in this way
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Tabliss Is A "New Tab" Plugin For Firefox and Chrome
Tabliss is a beautiful, customisable "New Tab" page for Firefox and Chrome, and the browsers that base of Firefox and Chrome (such as LibreWolf and Brave). In particular, it solves the "empty tab" problem that I was having on LibreWolf
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Zentyal Server 7.0 Development Now Available
Submitted by Roy Schestowitz on Tuesday 26th of January 2021 11:32:51 PM Filed under

Zentyal Development Team today announced the availability of Zentyal Server Development Edition 7.0. This is a new major community release of the Zentyal Linux Server, based on Ubuntu Server 20.04 LTS. This version comes with the most recent versions of all the integrated software, including Samba 4.11 and the latest stable SOGo version.
Zentyal Server provides an easy-to-use Linux alternative to Windows Server®. Thanks to the integration of Samba, Zentyal provides native compatibility with the Microsoft Active Directory® and allows transparent management of Windows® clients. It is used by companies and public administrations mainly as a domain and directory server and a file server. The graphical user inferface that Zentyal offers helps to make Linux server management easier for all and specially for new Linux users.
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Kernel: Moorestown, Nintendo 64, Corellium and Oracle
Submitted by Roy Schestowitz on Tuesday 26th of January 2021 10:53:45 PM Filed under
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Linux Says Farewell To Intel's Smartphone Attempts With Clearing Out Moorestown / Medfield
Not only are some old ARM platforms and some obsolete, obscure CPU architectures on the chopping block for some spring cleaning in the Linux kernel, but the Intel Moorestown and Medfield "Mobile Internet Device" platforms are being phased out from the Linux kernel this spring as well.
Moorestown was Intel's early Atom platform geared for handheld mobile Internet devices and smartphones.
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With Linux 5.12 Set To Boot On The Nintendo 64, The N64 Controller Driver Is Now Queued - Phoronix
A few days ago we wrote about Linux 5.12 to see support for the Nintendo 64 more than two decades after that MIPS-based video game console first shipped. While the practicality of Linux on the Nintendo 64 is particularly limited given only 4~8MB of RAM and the MIPS64 NEC VR4300 clocked under 100MHz, it's going upstream and now the N64 controller driver is also queued for this next kernel cycle.
The code talked about a few days ago was getting Linux to boot on the Nintendo 64. With those 200+ lines of code in the MIPS architecture space is enough to get Linux booting on the Nintendo 64 when using a Flashcart device to be able to load the arbitrary code onto the game console.
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Corellium to offer cloud-based iOS virtualisation to individual accounts
The company, which only recently ported Ubuntu Linux to work on Apple Silicon Macs, has announced on their blog that they will now offer their virtualisation tools for iOS to individual accounts on their CORSEC platform. Previously, only enterprise accounts could access the service, while individuals could only access virtual Android devices.
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Getting started with SystemTap on Oracle Linux
There are a wealth of tools available for tracing and debugging the Linux kernel on a live system. These include Kprobes, Ftrace, trace-cmd, Dtrace, eBPF, SystemTap, crash, gdb, etc. Among these tools, few allow the user to develop and re-use scripts that can filter events and collect data more than just function arguments and returned values. Dtrace, eBPF and SystemTap are the ones among these tools that do.
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Anticipating Your Memory Needs
The Linux kernel organizes physical memory in units of pages of a certain size called base pages. For example, the default base page size when running on Intel processors is 4KB. These pages are allocated to user and kernel tasks as they need memory. When processing large amounts of data from slower disk devices, the Linux kernel uses a page cache to cache contents, like disk blocks, to speed up access to frequently accessed data. See this article for more details on how various caches are used by the Linux kernel. This has the positive effect of improving overall system performance but the memory for page cache must come from the same memory pool that is used by rest of the system. The kernel allocates all the memory not currently in use to the page cache. As the kernel needs to allocate more memory for other tasks, it can reclaim pages from the page cache since the contents in the page cache can be restored from disk blocks when the need arises. Reclamation happens as the kernel starts to run low on free memory pages. Individual memory pages are the base pages. As pages are reclaimed, any contiguous base pages are grouped together (compaction) to form higher order pages. Higher order pages are groups of 2^n physically contiguous pages where n is the page order. Higher order pages can then be used to satisfy higher order page allocation requests, for example if an allocation request is for 8 pages, that allocation will be made from order 3 page group.
The kernel recovers physical memory in the event of a shortage by page reclamation and/or compaction. Both methods are implemented in a similar fashion. As the amount of free memory falls below the low threshold (watermark), memory pages are reclaimed asynchronously via kswapd or compacted via kcompactd. If the free memory continues to fall below a minimum watermark, any allocation request is forced to perform reclamation/compaction synchronously before it can be fulfilled. The latter synchronous method is referred to as the "direct" path and is considerably slower owing to being stalled waiting for memory to be reclaimed. The corresponding stall in the caller results in a non-deterministic increased latency for the operation it is performing and is typically perceived as an impact on performance.
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NPU-equipped Rockchip RV1109 debuts on dev boards and cameras
Submitted by Rianne Schestowitz on Tuesday 26th of January 2021 08:14:24 PM Filed under
JWIPC unveiled three “R19x” SBCs that run Linux on Rockchip’s dual -A7, 1.2-TOPS NPU equipped RV1109 camera SoC. Meanwhile, Firefly released two “CAM-C11x” cameras based on the RV1109 and similar quad-core, 2.0-TOPS RV1126.
Shenzhen-based JWIPC, which we last covered back in 2014 with its Intel Bay Trail based S015 Dual System signage player, has posted product pages for three development boards built around Rockchip’s new RV1109 camera SoC (translated). The R19x boards are aimed at security access point face recognition applications. The R19S and mini-PCIe and SIM-equipped R19F are 100 x 72mm Pico-ITX SBCs while the R19N has a smaller 100 x 60mm footprint.
10 of the Best Linux Debuggers for Software Engineers
Submitted by Rianne Schestowitz on Tuesday 26th of January 2021 07:42:35 PM Filed under

Debuggers are essential for locating bugs in programs. There is a plethora of robust Linux debuggers that make it easy to find weak points in your applications. We will outline some of these applications in this guide. Try some of these tools to get a feel of how debugging works in Linux.
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Is Oracle Linux a valid replacement for CentOS?
Submitted by Rianne Schestowitz on Tuesday 26th of January 2021 07:09:47 PM Filed under

By now you're probably suffering from CentOS exposure--it's been all over the place. Every day, someone is writing about what Red Hat did to the beloved Linux distribution that powers so many data centers and services. The reaction has been so sharp, that many forks of CentOS have begun to pop up. Some of these forks look seriously promising, even drop-in 1:1 binary compatibility with RHEL 8. When those forks appear, the landscape will most likely shift. However, until then, where's a business to turn?
Do you go with CentOS 8 Stream? Some might. Others, on the other hand, see Stream as an impossible option, due to cPanel pulling support, which is a very big deal.
What do you do? You could turn to Oracle Linux. Before you protest, I didn't say you should turn to Oracle Linux; I said you could.
Why did I feel the need to make that clarification?
Let me explain, and then I'll get into why Oracle Linux is a viable choice.
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Nvidia 460.39 Driver Adds Support for Linux 5.10 LTS, GeForce RTX 3000 Series of Laptop GPUs
Submitted by Marius Nestor on Tuesday 26th of January 2021 03:04:04 PM Filed under
Nvidia 460.39 is here three weeks after Nvidia 460.32.03 and introduces support for new graphics cards, including NVIDIA GeForce RTX 3060, NVIDIA GeForce RTX 3070, and NVIDIA GeForce RTX 3080 laptop GPUs, as well as NVIDIA GeForce GT 1010. This support is available only for GNU/Linux and FreeBSD systems.
Linux users would be happy to learn that the new Nvidia graphics adds support for newer kernels, such as the latest and greatest Linux 5.10 LTS series, restoring essential functionality like runtime power management, hot-plugging of audio-capable display devices, as well as S0ix-based system suspend.
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Kali Linux hands-on: A look at the installation options
Submitted by Rianne Schestowitz on Tuesday 26th of January 2021 11:29:44 AM Filed under
Anyone involved in or even significantly interested in cybersecurity has probably heard of Kali Linux. Since its early days as BackTrack, it has been considered the standard in penetration testing and security analysis platforms. In my opinion, it also happens to be one of the best Debian GNU/Linux distributions available.
It is based on Debian stable (currently 10/buster), but with a much more current Linux kernel (currently 5.9 in Kali, compared to 4.19 in Debian stable and 5.10 in Debian testing).
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Should Ubuntu Adopt KDE Plasma as Default Desktop? [Opinion and Analysis]
Submitted by arindam1989 on Tuesday 26th of January 2021 09:11:59 AM Filed under

With the recent GNOME 40 design change and Ubuntu decides to follow the “wait-and-watch” principle for its adaptation, we analyze whether Ubuntu should adopt KDE Plasma as its Default Desktop, saying goodbye to GNOME.
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Tails 4.15 Anonymous OS Released with Tor Browser 10.0.9 and Thunderbird 78.6
Submitted by Marius Nestor on Tuesday 26th of January 2021 08:55:51 AM Filed under
Synced with the stable software repositories of the Debian GNU/Linux 10 “Buster” operating system series, Tails 4.15 is powered by Linux kernel 5.9.15 for improved hardware support and comes with updated core applications, including the Tor Browser 10.0.9 anonymous web browser and Mozilla Thunderbird 78.6 email client.
On top of these updates, Tails 4.15 also improves support for Ledger hardware wallets in the Electrum Bitcoin wallet app, adds USB tethering support for devices running Apple’s iOS 14 or later to share mobile data, and clarifies the error message about the size of the USB flash drive shown when starting Tails.
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