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today's howtos

Submitted by Roy Schestowitz on Thursday 4th of February 2021 04:49:27 AM Filed under
HowTos
  • How To Manipulate PDF Files in Linux With PDFtk

    One would think that being called a “swiss army knife” would be the highest compliment a tool or utility could aspire to. Yet, the expression is oddly insufficient when describing PDFtk, an incredibly versatile utility that can be used to manipulate PDF files in myriad ways. According to its man page, if PDF is electronic paper, then PDFtk is an electronic staple-remover, hole-punch, binder, secret-decoder-ring, and X-Ray-glasses.

    There’s a number of operations you can perform on PDF files, such as merging, splitting, rotating, breaking into single pages, encrypting and decrypting, applying or removing watermarks, compressing or decompressing, etc. PDFtk, which stands for PDF toolkit can manage all these tasks, and more. PDFtk has been around for years and is available in the software repositories of most popular desktop distributions.

  • A Simple, Delay-Tolerant, Offline-Capable Mesh Network with Syncthing (+ optional NNCP)

    A little while back, I spent a week in a remote area. It had no Internet and no cell phone coverage. Sometimes, I would drive in to town where there was a signal to get messages, upload photos, and so forth. I had to take several devices with me: my phone, my wife’s, maybe a laptop or a tablet too. It seemed there should have been a better way. And there is.

    I’ll use this example to talk about a mesh network, but it could just as well apply to people wanting to communicate on a 12-hour flight that has no in-flight wifi, or spacecraft with an intermittent connection, or a person traveling.

  • Install PostgreSQL in Ubuntu 20.04

    PostgreSQL is RDBMS ( relational database management system ) that is used to store, retrieve data using standard query language SQL. It is also known as Postgres which is provided free with an open-source license. PostgreSQL supports JSON, XML, and materialized views where other database management software doesn’t.

  • How to Install and Manage RPM Packages on Ubuntu/Debian System

    The RPM packages are built and compiled to use in Fedora and Red Hat-based Linux distributions. The RPM stands for RPM Package Manager. Ubuntu and other Debian distributions use the .deb package. Sometimes, you would not find your desired Debian package for your Ubuntu Linux, but it might be available in RPM compiled version. In that case, some methods allow you to install RPM packages on your Ubuntu Linux system.

  • Linux head Command – Print First X Lines from File

    Today we are going to discuss another handy text utility that is part of the GNU Core Utilities package. The head command allows you to display the beginning of a file. In this short tutorial we will discuss how to use the head command, it’s options, and show some real world examples.

  • Inkscape Tutorial: Valentine's Hearts & Background

    Valentine's Day is coming up, and sometimes I wish I could make something completely different for a card for a loved one. The cards we get at the store are always beautiful, but sometimes home-made is the best. I saw this tutorial that looked really fun so I thought we could try it. This has a sun-ray sort of background that I wanted to create, so we'll do that first.

    Open Inkscape, and start by drawing a long triangle. Duplicate it, flip it, and position the two triangles with their points touching. Group them together.

  • Sharing A USB Drive From Your Wi-Fi Router

    Many modern routers have a built-in USB port which allows you to easily share an attached drive with all of the computers on your home network -- wired or via Wi-Fi. I attempted to set this up with our Wi-Fi router (a TP-Link AC4000) and an old Seagate Barracuda HD (80 GB) that was already in a 3.5" external drive enclosure. You may use any type of drive with a USB connection -- external HDD or SSD, portable HD or even a high-capacity flash drive.

  • Firefox Tips, Tricks & Easter Eggs

    It might not be the most popular web browser out there. Its popularity peaked in 2009 with a little over 32 percent of the browser "market." Today, depending on who is reporting the data, Firefox enjoys between three and nine percent of the browser market share. But, it has persevered and it is responsible for helping to shape many of the web standards we enjoy today. Plus, it certainly pre-dates most of its competition.

    Having started "life" as Netscape's open source browser, born out of Netscape's Mozilla community after AOL (remember them?) bought Netscape, Firefox has been with us for quite a long time. In fact, it has been around since 2002. In full disclosure, I have been a Firefox user since its inception. For me, Firefox is THE standard to which I hold all other web browsers.

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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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