today's leftovers

• Learn C++ Programming Step by Step – A 20 Day Curriculum!

  Although there are numerous programming languages available in the market to work upon, but C++ has never lost its charm since its inception and still has a strong impact in the development world. As per the reports, C++ comes under a few top programming languages across the world. Alike the C programming language, C++ also makes it easier for you to understand the underlying architecture of programming, although it also supports other additional features such as object-oriented programming, exception handling, etc. Moreover, various IT giants Google, Amazon, Microsoft, etc. offer numerous career opportunities to C++ professionals, hence you’re strongly recommended to give it a try and start to learn C++ Programming.

• Security by Diversity: Designing Secure, Reliable and Robust Systems

  This is the first in a series of blog posts on Security by Diversity. Here we'll focus on the scaling properties of reliability through diversity. Later blog posts will introduce the business and economic aspects of security through diversity and discuss not only technical security but also how to secure coordination and similar organisational aspects.

• Firmware updates, part 2: Transporting the update

  This is the second post in a series about doing device firmware updates (DFU) over the air (OTA) and continuous deployment of firmware for embedded devices. We'll explore the different parts of a complete end-to-end system with this capability.

  This post will be about the different networks and how you can manage firmware updates using them.

• A mystery with Fedora 36, fontconfig, and xterm (and urxvt)

  As of Fedora 36, Fedora changed their default fonts from DejaVu to Noto. This changes what the standard names 'serif', 'sans', and especially 'monospace'. When I upgraded my desktops to Fedora 36, I had a very bad reaction to the 'monospace' change, because the result looks really bad. It turns out that part of the reason that the result looks bad (although not all of it) is specific to xterm, and that is where the mystery comes in.

• App Rules Are Twisted to Absurdity

  Apple and Google have twisted their decade-old rules for their app stores like a pretzel to the point where they may no longer make sense. This has made buying digital stuff in apps convoluted as heck.

  One example: In theory, although not yet in reality, you can use your Amazon account to buy an e-book from Kindle’s iPhone app. You cannot buy an e-book in the Android version of the app. Until recently, Kindle purchases were effectively a no-go under Apple’s rules but fine under Google’s. Now it’s the opposite.

  Confusing? Yep. Apple and Google have written long, complicated guidelines for apps and have frequently revised those rules to protect their own interests. (I’ve noted before that Apple’s app rules are much longer than the United States Constitution.)

today's howtos

• Fallocate Command in Linux with 5 Examples

  When you create a new file on your Linux computer, a certain amount of disk space is allocated to the file. Adding new content to this file increases the file size and accordingly, Linux allocates more space to the file. Alternatively, you can use the fallocate command in Linux to preallocate data blocks, which involves allocating the data blocks and marking these data blocks as uninitialized.

• Linux: ZIP Files and Directories (How To Tutorial) - Linux Stans

  In this tutorial, we’re going to show you how to zip files and directories/folders on Linux. This tutorial will work on most major distros, like Ubuntu, Linux Mint, Fedora, Debian, CentOS, etc. ZIP is a utility used to compress/archive files and directories on Linux. It’s available for most major distros. This tutorial is for the CLI/terminal. All you need is access to the command line and the root/sudo user. If you want to zip/compress something via the GUI (graphical user interface), then just right-click on the files or folders and click on Compress or Archive.

• How to Install MySQL Community on Debian 11 Bullseye - LinuxCapable

  MySQL is a relational database management system based on SQL (Structured Query Language). It is one of the most widely used database software for several well-known applications. MySQL is used for data warehousing, e-commerce, and logging applications, but its most used feature is a web database storage and management. The following tutorial will teach you how to install MySQL Community on Debian 11 Bullseye using the MySQL official APT repository, which will give you the latest version available on your system using the command line terminal.

• Install Rocket Chat server on Ubuntu 22.04 using Snap - Linux Shout

  Learn a simple command to install Rocket Chat Server on Ubuntu 22.04 LTS Jammy JellyFish using the command terminal. Rocket.Chat is an open-source platform for team collaboration and communication with live chat, video and audio conferences, file sharing, message translation, and more. With Rocket.Chat, users can use the native iOS apps and Android apps from any device with Internet access, including Windows, Mac, mobile devices, or tablet devices. People widely compare it with Slack and consider it one of the Best Alternatives of it. With the communication platform, employees in the company can chat, exchange files and meet in group chats. This saves mass e-mails to many addressees, as everyone can read along in the group chat and trace the communication. In addition, there is security through end-to-end encryption to keep communication confidential. In addition to pure text messages, video calls are also possible. Facebook, WhatsApp, SMS, and CRM can also be integrated into Rocket.Chat. From the Advanced package, the Rocket chat app even includes video conferencing and helpdesk chat. Users can go their business with the helpdesk chat for customer inquiries on their homepage with the help of omnichannel.

• How to Install Sysdig on Debian 11 Bullseye - LinuxCapable

  Sysdig is open source, system-level exploration: capture system state and activity from a running Linux-based system such as Debian 11, then save, filter, and analyze that is particularly useful for system analysis, inspection, and debugging, amongst other uses. Sysdig is scriptable in Lua and includes a command-line interface and a powerful interactive UI using the command csysdig that runs in your terminal. The following tutorial will teach you how to install Sysdig on Debian 11 Bullseye using the command line terminal and basic commands for using Sysdig.

Android Leftovers

• One UI 5 beta testing (Android 13) for the Galaxy S22 series could be on the horizon | Android Central

• Android 12 for Nokia G20 available in more markets - Nokiapoweruser

• A Quick Guide on How to Use Android’s Lookout App – Phandroid

• How to move Android apps onto an SD card – Phandroid

• Turn Your Android Into a Wireless Mouse and More. Here's How - CNET

• How to add your COVID vaccination certification to Android – Phandroid