today's howtos
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Resetting CircleCI Checkout SSH Keys
Lately I’ve been having some weird problems with CircleCI and some of my OSS projects (most recently CIDER) - the SSH checkout keys that CircleCI uses to fetch the code from GitHub started to disappear which resulted in the following obscure error messages: [...]
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Why the ZFS ZIL's "in-place" direct writes of large data are safe
Taken by itself, this means that ZFS does synchronous writes twice, once to the ZIL as part of making them durable and then a second time as part of a regular transaction group. As an optimization, under the right circumstances (which are complicated, especially with a separate log device) ZFS will send those synchronous writes directly to their final destination in your ZFS pool, instead of to the ZIL, and then simply record a pointer to the destination in the ZIL. This sounds dangerous, since you're writing data directly into the filesystem (well, the pool) instead of into a separate log, and in a different filesystem it might be. What makes it safe in ZFS is that in ZFS, all writes go to unused (free) disk space because ZFS is what we generally call a copy-on-write system. Even if you're rewriting bits of an existing file, ZFS writes the new data to free space, not over the existing file contents (and it does this whether or not you're doing a synchronous write).
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How to Know if You Are Using Systemd or Some Other Init in Linux
When you start a Linux system, it starts with only one process, a program called init.
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How to install vnStat on Ubuntu 22.04 | FOSS Linux
VnStat is a command line-based network traffic monitor for BSD and Linux that maintains a network traffic log for the selected interfaces(s). The monitor utilizes the network interface statistics given by the kernel as an information source. To engender logs, vnStat uses the info provided by the kernel. It also ensures light utilization of system resources regardless of network traffic rate.
Besides the network statistics provided by this command line utility, vnStat provides summaries on various network interfaces like “eth0” for wired connections and “wlan0” for wireless connections. In most cases, network admins use vnStat to monitor hourly, daily, weekly, and monthly glimpses of network statistics in a detailed table or a terminal statistical view.
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How to install Universal Pokemon Game Randomizer on a Chromebook
Today we are looking at how to install Universal Pokemon Game Randomizer on a Chromebook. Please follow the video/audio guide as a tutorial where we explain the process step by step and use the commands below.
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How to Find and Fix Broken Packages on Linux
Package managers on Linux allow you to control the installation and removal of packages. In addition to that, package managers also help you find broken packages on your system and reinstall them to fix various issues associated with Linux packages.
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How To Install VMware Workstation On Ubuntu 22.04 | 20.04
In this guide, we will focus on how to install VMware Work Station Pro on Ubuntu 22.04 | 20.04.
VMware Workstation is a type 2 hypervisor designed for Windows and Linux systems. It allows you to create and manage virtual machines in either Windows or Linux environments.
Vmware Workstation is broadly categorized into two products: VMware Workstation Player and VMware Workstation Pro.
VMware Workstation Player is free for personal use whereas VMware Workstation Pro requires a license. The former is a non-commercial tool and provides just basic functionalities whereas Workstation Pro is a professional and more advanced virtualization solution. Both run on Linux and Windows systems and have virtually the same installation requirements. In addition, both run on x86-based architecture with 64-bit Intel and AMD CPUs.
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How To Find Which Service Is Listening On A Particular Port - OSTechNix [Ed: Newly updated]
This guide explains a few different ways to find which service is listening on a particular port in Linux. Most of you know the default port of popular services or processes. For example, the default port of Apache is 80, FTP default port is 21 and SSH default port is 22. You can find the port names and numbers in Linux as described in this guide. The default port numbers can also be changed to any custom ports to secure a Linux server. For instance, the following guides describes how to change the defaults port of Apache, FTP and SSH to different port.
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How to Configure Dovecot IMAP/POP3 Server on Ubuntu
Find out how to install and configure Dovecot email server on Ubuntu. This tutorial also explains how to extend Dovecot with modules.
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How to Install FileRun on Ubuntu 22.04 with Apache - RoseHosting
In this tutorial, we are going to install FileRun on Ubuntu 22.04 OS.
FileRun is a storage platform system that allows managing, sharing, and syncing files. FileRun can be an alternative to Google Drive and NextCloud and offers many features like virtual drive support, native mobile apps, metadata support, etc. In this installation, we are going to install the LAMP stack since the tutorial is installing FileRun on Ubuntu 22.04
Installing FileRun is a very easy process that can take up to 20 minutes. Let’s get started!
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How to Install and Use WP-CLI on Linux [Beginners’ Guide]
WordPress has created a reputation for itself as one of the world’s most sort-after open-source CMS (Content Management System) software. The growing popularity of WordPress CMS is due to the fact a non-coder can easily download, install, set up, and start running an enterprise-driven CMS platform.
WordPress design consideration of non-coders does not exclude the need for useful developer tools and documents. One such tool is WP-CLI.
WP-CLI tool provides a command-line interface for the WordPress CMS software, which makes it possible to install, manage, and update WordPress CMS software if need be.
Additionally, if you are handling multiple CMS sites, this tool will help with their configuration and the update of the WordPress backend server’s cores and plugins. Also, when trying to troubleshoot and restore an irresponsive WordPress frontend, WP-CLI is the go-to tool.
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How to determine which theme is currently enabled using the terminal? (GNOME)
This post although simple to use and explain can help us more than once. Especially in scripting and customization settings. Today, you will learn how to determine which theme is currently enabled using the terminal on Ubuntu | Linux Mint
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How to install Qcad on Debian 11 Bullseye - Linux Shout
Learn the commands to install the open source QCAD 2D program on Debian 11 Bullseye using the command line terminal.
QCAD is an open-source CAD program for two-dimensional drawings. It is a very powerful, free CAD program, but it cannot be compared to commercial programs. With QCAD you can create technical drawings such as plans for buildings, facilities, or mechanical parts as well as schemes and diagrams. It offers Construction and modification of points, lines, arcs, circles, ellipses, splines, polylines, texts, dimensions, hatches, fills, and raster images. However, you have to resort to additional programs for the three-dimensional viewing of your drawings.
Newer, paid versions can be purchased from the developer’s website.