today's howtos
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Toggling Line Numbers On/Off in the vi Text Editor – Linux Hint
The line numbers shown in a text editor can greatly enhance a programmer’s experience writing and reading code. There are several text editors available for the Linux operating system, including the popular and powerful vi text editor, and these editors can be used to create and modify various file types.
The vi editor provides three different types of line numbers: absolute, relative, and a hybrid combining features of absolute and relative. In this article, we will discuss method that can be used to change the line number type shown in the vi text editor.Note: Linux Mint 20 is used to demonstrate all the methods discussed below.
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How to Configure Network Static IP Address on RHEL/CentOS 8/7
The scope of this tutorial is to explain how we can edit and make changes to Network Configurations on RHEL/CentOS 8/7 from the command line only, and, more specifically how we can set up a Static IP address on network interfaces using system network-scripts, which is a must be configured to serve Internet-facing network services, and how to configure or change RHEL/CentOS system hostname.
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Ansible file Module – Tutorial and Examples - LinuxBuz
Ansible file module is used to deal with the files, directories, and symlinks. You can create or remove files, symlinks or directories on the remote hosts using the Ansible file module. It is also used to change the file ownership, group and permissions.
Ansible file module performs all tasks on the remote hosts. So before changing the ownership and permissions of the files and directories, relevant user and group must exist on the remote hosts. Otherwise, playbook execution will fail. In this case, you should always check the user or group’s existence on the remote hosts then change the ownership or permissions.
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Linux interface analytics on-demand with iftop | Enable Sysadmin
Got network bandwidth? Are you sure? Find out with iftop.
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GCP Quickstart Guide for OpenShift OKD - A Random Walk Down Tech Street
I recently did a blog post series. showing how to get started with OpenShift OKD on Fedora CoreOS for DigitalOcean. For that series I wrote a script to do most of the heavy lifting because DigitalOcean isn’t a native supported platform by the OpenShift installer.
Today I’ll show off how to get started in GCP, which is supported natively by the OpenShift installer. This makes it much easier to get started because most of the heavy lifting (including infrastructure bringup) is done by the installer itself.
As always, when looking for more information in addition to what I’m showing here today refer to the existing documentation. -
How to Install Jenkins Automation Server with Apache on Ubuntu 20.04
Jenkins is a free and open-source automation server that helps developers to build, test, and deploy their software. It is based on Java and provides over 1700 plugins that help to automate the repetitive tasks involved in the software development process. It supports multiple operating systems such as Windows, Mac OS X and Linux, and can easily be distributed across multiple machines.
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How to install MySQL server on Ubuntu 20.04 LTS Linux - nixCraft
Explains how to install and set up Oracle MySQL server 8.x on Ubuntu 20.04 LTS Linux, including new users and databases for your project.
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How To Create A Custom Ubuntu Live ISO Image With Cubic - OSTechNix
In this guide, we are going to learn what is Cubic and how to create a custom Ubuntu live ISO image with Cubic application.
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Enabling new hardware on Raspberry Pi with Device Tree Overlays - Bootlin's blog
We recently had the chance to work on a customer project that involved the RaspberryPi Compute Module 3, with custom peripherals attached: a Microchip WILC1000 WiFi chip connected on SDIO, and a SGTL5000 audio codec connected over I2S/I2C. We take this opportunity to share some insights on how to introduce new hardware support on RaspberryPi platforms, by taking advantage of the Raspberry Pi specific Device Tree overlay mechanism.
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