today's howtos
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Grafana & Prometheus Kubernetes Cluster Monitoring
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Parents counting children in CSS
I’ve built a demo to illustrate what can be done. If you click on the element, start typing and press Enter, the parent element tells you how many items you should add.
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A thought on presentational versus semantic HTML
One of the realities of life is that as people, we care about how things look, partly because in practice you can't divorce content from presentation. This means that most people are always going to care about how their HTML looks. If you write semantic HTML, making your HTML look right is a two step process; first you write carefully taxonomized ('semantic') HTML, and then you get it to look right with CSS or whatever. If you write presentational HTML, you have only one step; you write your HTML (and CSS) and directly tweak things if necessary.
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ZFS DVA offsets are in bytes, not (512-byte) blocks
In ZFS, a DVA (Device Virtual Address) is the equivalent of a block address in a regular filesystem. For our purposes today, the important thing is that a DVA tells you where to find data by a combination of the vdev (as a numeric index) and an offset into the vdev (and also a size). However, this description leaves a question open, which is what units are ZFS DVA offsets in. Back when I looked into the details of DVAs in 2017, the code certainly appeared to be treating the offset as being in bytes; however, various other sources have sometimes asserted that offsets are in units of 512-byte blocks. Faced with this uncertainty, today I decided to answer the question once and for all with some experimentation.
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da12 in my FreeBSD zfs array disappeared at :02 and came back at :04
Details about this host (disks, zpool, gpart, etc) are in this post.
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The Sender Policy Framework (SPF)
Take the Sender Policy Framework (SPF), for example. Seems pretty straight forward, right? If you're, say, a Mail Transfer Agent (MTA) for a popular public email service, and a new connection is made to you trying to deliver mail, you perform a few checks and, by way of SPF, determine whether or not you should even bother to accept the mail: [...]
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How to install Thinkorswim on Ubuntu 22.04 LTS Linux
Thinkorswim was launched in 1999 as an options brokerage platform. However, later it was acquired by TD Ameritrade, although Thinkorswim’s brokerage services were shut down, the trading platform is still active and distributed by TD Ameritrade for its clients. Besides the trading feature, Thinkorswim users also have access to trading and analysis tools, online courses, etc.
Unlike TradingView which can be linked to the trading accounts of many different brokers, Thinkorswim is only used by TD Ameritrade clients.
Thinkorswim allows users to freely set alerts based on parameters of technical indicators and price movements. Meanwhile, TradingView allows users to receive only 12 different alert conditions. However
Thinkorswim is a bit more complicated for beginners. It is confusing even for many experienced traders. However, the platform has a fairly detailed and comprehensive system of study guide documents that users can use when they need to study.
Thinkorswim is completely free for customers, which is a big plus. For traders with TD accounts, Ameritrade has provided extensive knowledge for traders who want to learn about trading and investing.
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Use Tracee to solve for missing BTF information | Opensource.com
Tracee is a project by Aqua Security for tracing processes at runtime. By tracing processes using Linux eBPF (Berkeley packet filter) technology, Tracee can correlate collected information and identify malicious behavioral patterns.
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How to Install Rocky Linux 9.0 Step by Step
Rocky Linux 9.0 was made generally available on July 14, 2022. It comes with a boatload of new features and improvements and will enjoy support and maintenance until May 31, 2032. The previous release, Rocky Linux 8, will still continue to receive support until May 31, 2029.
In this guide, we will walk you through the installation of Rocky Linux 9.0.
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Convert Arch Linux Packages To AppImage Format - OSTechNix
We already have discussed how to convert a DEB package to an Arch Linux package format with Debtap utility. We also have seen how to use Alien tool to convert Linux packages to different formats. Today, we will be discussing yet another Linux package converter tool named Arch2appimage. In this guide, we will see a brief introduction to Arch2appimage, and how to install Arch2appimage in Linux and how to convert Arch Linux packages to AppImage format with Arch2appimage application.
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How To Install XanMod Kernel on Ubuntu 22.04 LTS - idroot
In this tutorial, we will show you how to install XanMod Kernel on Ubuntu 22.04 LTS. For those of you who didn’t know, XanMod is a popular Linux kernel modification that provides enhanced performance and stability for gaming, streaming, and other resource-intensive tasks Compared to the stock Linux Kernel found in many other Linux distributions, you will find some custom settings and new features enabled to enhance your experience with it.
This article assumes you have at least basic knowledge of Linux, know how to use the shell, and most importantly, you host your site on your own VPS. The installation is quite simple and assumes you are running in the root account, if not you may need to add ‘sudo‘ to the commands to get root privileges. I will show you the step-by-step installation of the XanMod Kernel on Ubuntu 22.04 (Jammy Jellyfish). You can follow the same instructions for Ubuntu 22.04 and any other Debian-based distribution like Linux Mint, Elementary OS, Pop!_OS, and more as well.
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How To Install Zoom on Linux Mint 21 - idroot
In this tutorial, we will show you how to install Zoom on Linux Mint 21. For those of you who didn’t know, Zoom is a communications technology platform that provides video telephony and real-time online chat services through a cloud-based peer-to-peer software platform. Zoom is not only used as a platform for audio or video conferencing but is also used for chats, and conducting several webinars. It is available on Windows, Linux, macOS, Android, and iOS systems.
This article assumes you have at least basic knowledge of Linux, know how to use the shell, and most importantly, you host your site on your own VPS. The installation is quite simple and assumes you are running in the root account, if not you may need to add ‘sudo‘ to the commands to get root privileges. I will show you the step-by-step installation of a Zoom video conference on Linux Mint 21 (Vanessa).
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How to Install Ubuntu on a USB Flash Drive (Solution)
Ubuntu is one of the most widely used Linux operating systems among home users and enterprises. Ubuntu is normally installed by booting from a USB.
Installing the entire Ubuntu on a USB Flash drive is simple and straightforward. We need a bootable usb and another USB to which complete Ubuntu to be installed.
You can use ubuntu installed USB as a portable computer and bootable device. In this tutorial, we learn how to install the entire Ubuntu on a USB Flash Drive.
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How to install Webmin 2.0 on Ubuntu Server 22.04 | TechRepublic
Jack Wallen demonstrates how to install the latest version of the powerful Webmin web-based admin tool for Linux.