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today's howtos

Submitted by Roy Schestowitz on Sunday 14th of March 2021 12:34:16 PM Filed under
HowTos
  • Citations

    The more I want to incorporate some way to create citations in a document, the more I’m starting to hate citations and bibliography management with a passion. The document in question is supposed to export well to both HTML and PDF, the latter via TeX. While the bibliography management in TeX and friends is more or less “solved,”Through a monumental effort and probably some tears, as I imagine—BibTeX has been released 36 years ago. the story looks rather different for bibliography management in HTML.

  • How to Create Indices in PostgreSQL – Linux Hint

    Indices are specialized search tables used by databank hunt engines to accelerate query results. An index is a reference to the information in a table. For example, if the names in a contact book are not alphabetized, you would have to go down every row and search through every name before you reach the specific phone number that you are searching for. An index speeds up the SELECT commands and WHERE phrases, performing data entry in the UPDATE and INSERT commands. Regardless of whether indexes are inserted or deleted, there is no impact on the information contained in the table. Indexes can be special in the same way that the UNIQUE limitation helps to avoid replica records in the field or set of fields for which the index exists.

  • How to Install ReactJS on Ubuntu 20.04? – Linux Hint

    React or Reacts was launched in 2011. It is a front-end JavaScript library that is used to develop UI components. It is managed by Facebook and open-source developers.

    ReactJS is an open-source library that makes it effortless to create and maintain interactive UI specifically for single-page applications. Many developers are using it because of its flexibility, integrity, and its feature to bring Html directly into JS. Many well-known corporations such as Facebook, Uber, and Instagram used the ReactJS framework to create interfaces.

  • How to Install Anaconda in Linux Mint 20? – Linux Hint

    Anaconda is a popular Python platform that is widely used in Machine learning and its associated fields. It contains many open-source data packages, and we can also install more than 7500 data packages using Anaconda repositories.

    Anaconda can be installed on Linux Mint 20 from the installer script.

  • Install and Review Cockpit on Lubuntu 20.04

    What is Cockpit?

    Cockpit is a Linux application that allows you to manage Linux itself via the web. As an example, you can see which applications are running or install updates without having to log in to the machine. It also allows you to connect to and control other machines.

    Why use it?

    It allows you to monitor the system, to have a look at things without having to use a graphical environment and its integration with the terminal makes it flexible and convenient.

  • How to Install Evernote (Nixnote2) on Linux Mint? – Linux Hint

    Evernote is a multi-platform and popular note-taking application. It helps us organize and manage daily tasks by providing prominent features such as listing, sketching, and note-taking. We can easily integrate the Evernote application to Gmail, Outlook, etc.
    Evernote application is not available Linux. However, various unofficial Evernote clients are available for Linux. Among those, Nixnote2 is a lightweight Evernote client available for Linux. It provides all the Evernote’s features on Linux Desktop.

    This guide explains the Nixnote2 installation on Linux Mint.

    Nixnote2 can be installed on Linux Mint from the Software Manager application and the terminal. Moreover, the Evernote web client is available for Linux Mint via snap.

  • How to Install Signal Messenger on Linux Mint? – Linux Hint

    Signal Messenger is a popular, multi-platform application used for sending instant messages, making audio and video calls. It is widely used due to the privacy features that it provides to the end-user.
    Signal can be installed on Linux Mint from the software manager application, official Signal repository, snap, and flatpak application manager.

    This post will discuss the installation process of Signal Messenger on Linux Mint.

  • How to Use PostgreSQL Materialized Views – Linux Hint

    Views in PostgreSQL are graphical tables that display data from the corresponding tables. Common views can also be modified. PostgreSQL takes the concept of views to the next stage by allowing views to store information materially, referred to as materialized views. A materialized view preserves the output of a time-consuming, complicated query, allowing you to query the results quickly at any time. Materialized viewpoints are frequently used in data warehouses and business intelligence applications because they are helpful in situations that require fast access to data.

  • PostgreSQL UUID Types and Functions – Linux Hint

    The PostgreSQL UUID, or Universal Unique Identifier, is specified by RFC 4122 and has a 128-bit length. Internal algorithms are used to construct the UUID, and each value is distinct. PostgreSQL has its own UUID data type and generates them with modules. The UUID data type is commonly cast off within distributed databases because this data type ensures singularity, rather than the SERIAL type, which only generates singular values inside a single database. While PostgreSQL allows you to save and contrast UUID values, this one does not have methods for creating them at its core. Rather, it relies on third-party packages that have specific UUID generation algorithms.

    Let us now take a look at certain representations of UUID values, as seen in the diagram below. A UUID is made up of 32 bits of hexadecimal digits with up to four hyphens, as seen in the diagram below. A UUID can also have a value of 0, which means that all bits are empty.

  • How to Use Quota on Ubuntu? – Linux Hint

    A Quota is a built-in feature of the Linux kernel that is used to set a limit of how much disk space a user or a group can use. It is also used to limit the maximum number of files a user or a group can create on Linux. The filesystem where you want to use quota must also support quota. Some of the filesystems that support quota on Linux are ext2, ext3, ext4, xfs, etc.

    In this article, I will show you how to use quota in a multi-user environment on Ubuntu. So, let’s get started.

  • How To Disable WiFi on Linux System: GUI and CLI Methods

    Disabling Wifi on a Linux desktop might be essential if you’re running an old computer that requires an external USB wifi adapter or need to use an ethernet cable. From my personal experience, I can say that using an ethernet cable to connect internet provides better services no matter which Linux system you’re operating. If you disable Wifi on a Linux-operated laptop, it could also save your battery life. If you’re a professional Linux user, you might be more comfortable using the CLI mode than the GUI methods of disabling Wifi.

    [...]

    To disable Wifi on Linux, you don’t need to know anything but basic computing knowledge. Modern Linux distributions have a very smooth and straightforward desktop environment that is easy to operate. You can find network, Wifi, and other connectivity settings on the setting panel on your Linux system.

    This post will cover both GUI and CLI methods of disabling Wifi on the Debian, Red Hat, and Fedora Linux systems. As different Linux distributions might use the same DE, I’ll describe the method of disabling Wifi based on the Linux desktop environment, not based on Linux distributions.

»

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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.

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  • 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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