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today's howtos

Submitted by Roy Schestowitz on Saturday 3rd of April 2021 11:15:43 PM Filed under
HowTos
  • Bash Exit Code of Last Command – Linux Hint

    When a bash command is executed, it leaves behind the exit code, irrespective of successful or unsuccessful execution. Examining the exit code can offer useful insight into the behavior of the last-run command.

    In this guide, check out how to check bash exit code of the last command and some possible usages of it.

  • How To Install UVdesk on CentOS 8

    In this tutorial, we will show you how to install UVdesk on CentOS 8. For those of you who didn’t know, UVdesk Open Source is free fully-functional helpdesk software, designed on a very famous framework that recognizes among all developers such as Symfony, a PHP framework. UVdesk also organizes internal and external communication through clear structures and optimized processes allowing IT teams to avoid errors and complete tasks quickly and efficiently.

    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 through the step-by-step installation of the UVdesk helpdesk ticketing system on a CentOS 8.

  • How to monitor system resources on Linux

    The job of the system admin is never done. Security, software rollouts, updates, user management, network I/O...you name it, and the admin has to do it. All those duties can bog the admin down during their day. When one thing goes wrong, all other things might get shoved to the side.

  • How Do I Find Out Which Port SSH Is Running On? – Linux Hint

    Secure Shell, commonly called SSH, is a network protocol used to perform remote logins in machines in a network or over the internet. SSH is very popular as it is secure and easy to use, especially if you are comfortable using the terminal.

    In this quick guide, we will discuss how to install SSH using OpenSSH server on a Linux system, quick configuration, and finally, show you how to view and change the port on which SSH is running.

  • How to Add User to Sudoers on Ubuntu 20.04? – Linux Hint

    We are used to logging into the administrator account in Windows and using different things directly as an administrator.

    In Windows, User Access Control (UAC) was implemented because remaining logged in as an administrator presented a very simple security danger. With UAC, most programs run with restricted access, and Windows only prompts the user to ask for permission when a system file needs to be changed.

    In Linux systems, we can run administrative applications by using the “sudo” command. It allows us to run a program as the root user. If you frequently use root as your user, you will be exposed to the risk of giving your device full access to malicious programs.

    There are two options to add a user to the sudoers. One way is by doing it manually and the other is by using the usermod command.

  • How to Find SSH Public Key – Linux Hint

    In some situations, you may need to view the contents of your SSH keys. For example, you may need to view the contents of a public key to add it to remote services requiring SSH authentication, such as Google Cloud. This article shows you how to view SSH key contents using a simple cat command in Linux.

  • How to Create a Directory in Ansible – Linux Hint

    Ansible is one of the best automation tools available, offering simple, intuitive, and powerful tools to perform automation tasks in the modern world.

    For most automation tasks, you will need to create directories, especially when installing various tools and applications, backups, and restores. Though you can perform these tasks using an automated script, Ansible provides better functionality, allowing you to create directories in specified hosts.

    This tutorial shows you how to use the Ansible file module to create, remove, and modify directory permissions for specified hosts.

  • How to Change Hostname on Linux Mint 20 – Linux Hint

    Hostname enables us to identify a device over the network. The hostname is set on your device during the installation process, or we can change it anytime on our virtual machine. A conflicting situation can arise if more than one device has a similar hostname and is connected to the same network.

  • How Do I Create a .CRT File in Linux? – Linux Hint

    Files with the .CRT extensions are normally SSL/TLS certificates. The .CRT extension is one of the most commonly used SSL/TLS certificate formats in Linux and other Unix-like systems.

    This tutorial will answer your question regarding creating a .CRT certificate file in Linux using the OpenSSL tool.

»

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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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