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today's howtos

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HowTos
  • Wildcards in Linux explained with 10 examples | FOSS Linux

    Wildcards, a.k.a. meta characters, are a godsend when it comes to searching for particular filenames from a heap of similarly named files. For example, by using Wildcards in Linux, you can use the ls command, rm command, or any other Linux command for that matter, on multiple files as long as they match the defined criteria.

  • Set Raspberry PI Swap Memory - peppe8o

    Beside CPU, RAM is the most valuable resource in every computer. It is where data are stored for running programs and it is one the most important resource for applications managing a big amount of data. Raspberry PI Swap Memory, like other linux systems, can reduce small RAM impact avoiding Out of Memory errors

  • Install and Configure a Multi-Master HA Kubernetes Cluster with kubeadm, HAProxy and Keepalived on CentOS 7

    The kubeadm tool is great if you need a simple way to deploy Kubernetes, and integrate it into provisioning systems such as Ansible. I use Ansible a lot nowadays, but before I got to the point of automating my Kubernetes homelab, I had to do it by hand. You can’t automate what you don’t understand.

    As we will be deploying three Kubernetes control plane nodes, we need to deploy a kube-apiserver load balancer in front of them. The load balancer distributes traffic to all healthy control plane nodes in its target list. HAProxy is my homelab load balancer of choice, and we will configure it with Keepalived to provide node redundancy. If one of the HAProxy servers becomes unavailable, the other one will serve traffic.

    We will use three KVM hosts to deploy resources. The goal is to sustain data and maintain service in the event of a loss of a (single) hypervisor host.

  • How to Find a Directory in Linux

    Looking for a specific directory in your Linux file system? Fortunately, you have many search tools at your disposal. We'll look at several easy-to-use options, and how to use them to search for folders efficiently.

  • How to Install and Use Terraform on Ubuntu 20.04 - LinuxBuz

    Terraform is an open-source software tool created by Hashicorp. It is used to automate and manage your infrastructure, your platform and services that run on that platform. It uses a declarative language that means you don't have to define every step of how this automation and management is done. With Terraform, you can create a VPS, AWS users and permissions, spin up servers and install the application on servers.

  • Transition from Thunderbird to Mutt

    I was going OK with Thunderbird and enigmail(though it have many problems). Normally I go through changelogs before updating packages and rarely do a complete upgrage of my machine. Couple of days ago I did a complete upgrade of system which updated my Thunderbird to latest version and throwing of enigmail plugin for using their native openPGP support. There is a blog from Mozilla which I should’ve read earlier. Thunderbird’s builtin openPGP functionality is still in experimental, atleast not ready for my workflow. I could’ve downgrade to version 68. But I chose to move to my secondary MUA, mutt. I was using mutt for emails and newsletters that I check twice in a year a so.

    So I started configuring mutt to handle my big mailboxes. It took three evenings to configure mutt to my workflow. Though the basic setup can be done in less than an hour it is the small nitpicks consumed much of my time. Currently I have isync to pull and keep mails offline. Mutt to read, msmtp to send, abook as the email address book and urlview to see the links in mail. I am still learning notmuch and virtual mailbox ways to filter.

  • Setting up Tomcat 9.0.41 && mariadb-server 10.5 on Debian Bullseye/sid

    Setup Tomcat via original tar.gz ball and JDK 11 allow to deploy "war" archive been built for Web Servlet Application from http://lxer.com/module/newswire/view/295844/index.html . Thus CRUD Server side Java Apps might be moved on Debian Bullseye/sid in 3-5 minutes .

More in Tux Machines

The March 2021 Issue of the PCLinuxOS Magazine

The PCLinuxOS Magazine staff is pleased to announce the release of the March 2021 issue. With the exception of a brief period in 2009, The PCLinuxOS Magazine has been published on a monthly basis since September, 2006. The PCLinuxOS Magazine is a product of the PCLinuxOS community, published by volunteers from the community. The magazine is lead by Paul Arnote, Chief Editor, and Assistant Editor Meemaw. The PCLinuxOS Magazine is released under the Creative Commons Attribution- NonCommercial-Share-Alike 3.0 Unported license, and some rights are reserved. All articles may be freely reproduced via any and all means following first publication by The PCLinuxOS Magazine, provided that attribution to both The PCLinuxOS Magazine and the original author are maintained, and a link is provided to the originally published article. In the March 2021 issue: * Short Topix: 10 Year Old Sudo Security Bug Patched * Repo Review: Minitube * GIMP Tutorial: Top GIMP Filters, Part 2 * H.264 vs H.265: The Evolution Of Video Codecs * Two PCLinuxOS Family Members Finally Meet * Tip Top Tips: How I Converted My H.264 Video To HEVC * PCLinuxOS Recipe Corner: Tortilla Casserole * And much more inside! This month’s cover was designed by parnote. Download the PDF (9.8 MB) https://pclosmag.com/download.php?f=2021-03.pdf Download the EPUB Version (7.1 MB) https://pclosmag.com/download.php?f=202103epub.epub Download the MOBI Version (7.2 MB) https://pclosmag.com/download.php?f=202103mobi.mobi Visit the HTML Version https://pclosmag.com/html/enter.html

Android Leftovers

SparkyLinux Finally Gets a KDE Plasma Edition, Xfce Flavor Updated to Xfce 4.16

Based on the Debian Testing repositories as of March 5th, 2021, where the development of the upcoming Debian GNU/Linux 11 “Bullseye” operating system series takes place, the SparkyLinux 2021.03 release ships with Linux kernel 5.10 LTS, the Calamares 3.2.37 installer, and various updated components (see below). But what caught my attention is the fact that SparkyLinux now features a KDE Plasma edition! Until now, SparkyLinux shipped with the Xfce, LXQt, MATE, Openbox (MinimalGUI), and MinimalCLI (text-mode) editions. Read more

How to Mount Windows NTFS Partition in Linux

This is quite common for Dual Boot users who use Windows and Linux simultaneously for their work. You can easily mount Windows partitions through File Manager. When you try to mount the NTFS partition from a terminal, you will encounter an error “The disk contains an unclean file system (0, 0). Read more