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today's howtos

Submitted by Roy Schestowitz on Wednesday 28th of July 2021 02:11:45 PM Filed under
HowTos
  • How to add comments in JSON

    The JSON is a set of data chunks only. If a comment is added, it will be compiled as data too. To insert a comment, you could for instance add a specific data element or field called “_comment” that will not be interpreted by the JSON program compiler

  • How To Install Mosquitto MQTT on Ubuntu 20.04 LTS - idroot

    In this tutorial, we will show you how to install Mosquitto MQTT on Ubuntu 20.04 LTS. For those of you who didn’t know, MQTT, an acronym for Message Queue Telemetry Transport, is a lightweight communication protocol based on the publisher/subscriber concept. It represents an alternative to the classic client/server architecture, widely used in the Internet of Things. It is commonly used for geo-tracking fleets of vehicles, home automation, environmental sensor networks, and utility-scale data collection.

    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 Mosquitto MQTT on Ubuntu 20.04 (Focal Fossa). You can follow the same instructions for Ubuntu 18.04, 16.04, and any other Debian-based distribution like Linux Mint.

  • rclone: Google Drive, Microsoft OneDrive, box, DropBox and much more from the CLI — The Ultimate Linux Newbie Guide

    I used to use insync to access my Google Drive account from the command line because it was reliable, however insync ceased support for their CLI client, so I had to rethink that.

    I’ve decided to plop with rclone because it’s flexible, lightweight, it works well and it supports over 40 different filesharing platforms, including the most popular ones: Google Drive, Dropbox, Box, Microsoft OneDrive, Amazon Drive/S3. It also supports SSH/SFTP – which is nice, because it presents files/directories on another server just as if they are local files.

    The installation & configuration steps are listed below

  • How to Install Usermin on Ubuntu 20.04

    Usermin is a web-based interface mainly for webmail designed for non-root users to perform routine tasks including, reading mail, changing passwords, setting up databases and a web-basedSSH terminal. It is a stripped-down version of Webmin intended for regular users without always system administrators. It provides a rich set of features.

  • How to Install EteSync server on Ubuntu 20.04

    EteSync is an open-source solution to sync your contacts, calendars, and tasks. It is self-hosted, provides end-to-end encryption, and allows you to share data with other users. It can be integrated with GNOME and KDE desktops. It can be accessed through desktop, web, Android, and iOS clients.

    In this tutorial, I will show you how to install EteSync with Apache on Ubuntu 20.04.

  • Customizing Node.js .env files

    Applications are commonly required to deploy to many different environments, including staging, testing, and production, without building environment-specific artifacts.

    Methodologies like the 12 Factor App specify that an application’s code and configuration are separate but combine during deployment to accommodate specific environments.

  • How to prevent that a user deletes a file owned by root in his home directory

    Even though a file is held by root and has 700 rights, if the root user saves it in another user's home directory or any other directory owned by another user, that user can remove the file.

  • Kernel tracing with trace-cmd

    trace-cmd is an easy-to-use, feature-rich utility for tracing Linux kernel functions.

  • How to use touch command in Linux Guide for beginners 2021

    The touch command is a very common and standard command used in all UNIX/Linux based operating systems. Mostly, touch command in Linux is used to create a blank file.

    But You can use to change and modify the timestamps of a file.

    You can create a file with the help of other commands like a cat. I have explained how to use cat command in Linux to create a file, but not blank.

    If you are looking to create a file without content you must use cat command in Linux. The file created using the touch command is empty.

    This command can be used when the user doesn’t have data to store at the time of file creation.

  • How to create group in Linux by Groupadd command Guide 2021

    groupadd command is used to add or create group in Linux. You will learn in this article how to create group in Linux by using simple command groupadd.

    You are working in an organization as a system administrator of Linux. all users on system are belongs to 3 different-2 departments example, Sales, account, and HR. If we will not manage those users they can access each other’s data.

    Accessing data of every user neither safe for the department nor for Organization. So managing those users are important and necessary.

  • How To Set Up SSH Public and Private Key in Linux

    SSH or Secure Shell Protocol is a cryptographic network protocol that is used to securely access a remote machine from another computer over an unsecured network via the command line. With SSH, you can execute commands on remote Linux systems and servers, send/transfer files, and normally manage everything you do from one place.

    When you are operating with multiple Linux servers in various locations, or if you are just trying to save some ideal time accessing these servers, you will want to use an SSH public and private key pair to make life much easier by logging into remote machines and running commands without entering passwords. Also, the SSH key pairs are more secure as they are not vulnerable to common brute-force password hacking attacks.

  • Create your own custom Raspberry Pi image

    Build a Raspberry Pi image from scratch or convert your running, modified Raspberry Pi OS back to an image others can use.

    [...]

    To successfully run the build process, it is recommended to use a 32bit version of Debian Buster or Ubuntu Xenial. It may work on other systems as well but to avoid unnecessary complications, I recommend to setup a virtual machine with one of the recommended systems. If you are not familiar with virtual machines, take a look at my article Try Linux on any operating system with VirtualBox. When you have everything up and running, also install the dependencies mentioned in the repository description. Also consider that you need internet access in the virtual machine and enough free disk space. I set up my virtual machine with a 40GB hard drive which seemed to be enough.
    In order to follow the instructions in this article, make a clone of the pi-gen repository or fork it if you want to start developing you own image.

»

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today's howtos

  • How to install go1.19beta on Ubuntu 22.04 – NextGenTips

    In this tutorial, we are going to explore how to install go on Ubuntu 22.04 Golang is an open-source programming language that is easy to learn and use. It is built-in concurrency and has a robust standard library. It is reliable, builds fast, and efficient software that scales fast. Its concurrency mechanisms make it easy to write programs that get the most out of multicore and networked machines, while its novel-type systems enable flexible and modular program constructions. Go compiles quickly to machine code and has the convenience of garbage collection and the power of run-time reflection. In this guide, we are going to learn how to install golang 1.19beta on Ubuntu 22.04. Go 1.19beta1 is not yet released. There is so much work in progress with all the documentation.

  • molecule test: failed to connect to bus in systemd container - openQA bites

    Ansible Molecule is a project to help you test your ansible roles. I’m using molecule for automatically testing the ansible roles of geekoops.

  • How To Install MongoDB on AlmaLinux 9 - idroot

    In this tutorial, we will show you how to install MongoDB on AlmaLinux 9. For those of you who didn’t know, MongoDB is a high-performance, highly scalable document-oriented NoSQL database. Unlike in SQL databases where data is stored in rows and columns inside tables, in MongoDB, data is structured in JSON-like format inside records which are referred to as documents. The open-source attribute of MongoDB as a database software makes it an ideal candidate for almost any database-related project. 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 MongoDB NoSQL database on AlmaLinux 9. You can follow the same instructions for CentOS and Rocky Linux.

  • An introduction (and how-to) to Plugin Loader for the Steam Deck. - Invidious
  • Self-host a Ghost Blog With Traefik

    Ghost is a very popular open-source content management system. Started as an alternative to WordPress and it went on to become an alternative to Substack by focusing on membership and newsletter. The creators of Ghost offer managed Pro hosting but it may not fit everyone's budget. Alternatively, you can self-host it on your own cloud servers. On Linux handbook, we already have a guide on deploying Ghost with Docker in a reverse proxy setup. Instead of Ngnix reverse proxy, you can also use another software called Traefik with Docker. It is a popular open-source cloud-native application proxy, API Gateway, Edge-router, and more. I use Traefik to secure my websites using an SSL certificate obtained from Let's Encrypt. Once deployed, Traefik can automatically manage your certificates and their renewals. In this tutorial, I'll share the necessary steps for deploying a Ghost blog with Docker and Traefik.

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