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today's howtos

  • How to create a Linux EC2 instance step by step on Amazon AWS

    Amazon EC2 (Amazon Elastic Compute Cloud) is a part of AWS product offerings, where users can rent virtual servers in the AWS public cloud. You pay for rented compute resources (CPU, memory, hard drive) at per-second granularity on a "pay-as-you-go" basis. For those of you who have just started with Amazon EC2, this tutorial covers a step-by-step procedure to create a Linux instance on AWS EC2 platform.

  • What’s with cp --reflink: failed to clone: Invalid argument?

    Most modern copy-on-write file systems, such as Btrfs and XFS, support file cloning. (OpenZFS being the notable exception.) However, the tools that support this space-saving innovation can be difficult to use. Here’s an example situation detailing how the simple copy (cp) command on Linux can make it hard to understand what’s going on. As an example, here’s a quick command set that will create a file and a directory, disable copy-on-write on the directory, and then attempt to clone the file into the directory. It uses commands from gnu-coreutils and e2fsprogs packages, and assumes you’re working on a file cloning-capable file system.

  • Set Up SSH Two-Factor Authentication (2FA) on CentOS/RHEL Server

    This tutorial will show you how to set up SSH two-factor authentication on CentOS/RHEL server using the well-known Google Authenticator. It will greatly improve the security of SSH service on your CentOS/RHEL server.

  • How to Install PHP 8.0 & PECL Extensions in Ubuntu 20.04, 18.04, 16.04 | UbuntuHandbook

    Want to install PHP 8.0 as well as many PECL extensions in your Ubuntu Server? Well there’s a well trusted PPA that contains the packages for all current Ubuntu releases. Ondřej Surý, a Debian Developer who maintains the official PHP packages in Debian, is maintaining an Ubuntu PPA that contains the latest PHP 5.6, PHP 7.0, PHP 7.1, PHP 7.2, PHP 7.3, PHP 7.4, and PHP 8.0 packages as well as PECL extensions for all current Ubuntu releases.

  • Install and Configure Prometheus Monitoring on Kubernetes

    We are going to deploy Prometheus to monitor Kubernetes nodes and more.

  • Command to install Vmware tools on Ubuntu using terminal

    Vmware workstation Player is one of the best available virtualization platforms to run various Linux, Android, and Windows virtual machines. However, to adapt the host display and increase the performance of installed guest os or VMs it needs a set of tools called VMware Tools to install on Linux, Windows, and other supported OS. VMware tools let us enable guests to host or vice versa content copy-paste (clipboard), drag and drop facility to transfer folders and files, and let the guest os to adapt the resolution of the host display. Although we can install VMware Tools using the graphical options of VMware workstation player, however, on Linux this becomes a lot easier and straightforward with the help of a command-line terminal.

GhostBSD 21.01.20 release note

This new release is to fix a bug found in the installer related to the hostname not behind set up properly on the new system installation. I am sorry if some of you had a problem cause I the missing hostname. [...] Recommended system requirements for the new iso - 64-bit processor - 4GB+ of RAM - 15 GB of free hard drive space - Network card Read more

MX Linux is Now Available for Raspberry Pi [Download and Install Guide]

The lightweight and popular Linux distribution - MX Linux extended its reach. And MX Linux is now available for Raspberry Pi devices as a Beta image (Fluxbox-RaspberryPi Respin “Ragout” ) which you can try out on your devices right now. Here's how. Read more

Android Leftovers