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today's howtos

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HowTos
  1. Adding a Host to Monitor to LibreNMS

    LibreNMS is a monitoring tool that supports auto-discovery with multiple protocols, including SNMP, ARP, OSPF, and BGP. To monitor operating systems, you can use the SNMP protocol, which is available on most OS, including Linux, Windows, and BSDs.

    There are three versions of SNMP Protocol, v1 and v2 which are secured with only a community password, and the protocol v3 which supports passwords for authentication and encryption. For the production environment, it's recommended to use the SNMP protocol v3, which is more secure than v2 and v1.

    In this article, you will learn how to add hosts to the LibreNMS monitoring system using the SNMP protocol.

  2. AWK Command Examples for Beginners / AWK Linux Tutorial

    Learning to use the AWK utility in Linux is a skill that most Linux users yearn to have. It can save you time and energy, as well as help you better understand the inner workings of your computer.

    While it may seem hard at first, you will become well-versed with this command-line utility with the right guide and frequent practice.

    Once you understand the AWK utility well, you will find it a necessary tool when working on your Linux Terminal.

  3. How to Install Midori Browser on Ubuntu Linux – VITUX

    There are tons of browsers are out in the market catering different needs of diverse computing communities. One of them is the Midori browser that helps a unique range of users who thrive on the speed. Users who need a greater navigational speed and built-in browser shortcuts rely on Midori all the time.

  4. How to Install InvoicePlane with Apache and Free Let's Encrypt SSL Certificate on Debian 11

    InvoicePlane is a free, open-source, and self-hosted application for managing your quotes, invoices, clients, and payments. It is used by many organizations and freelancers to manage their payments and invoices. It offers custom templates, themes, and other tools that help you to increase the functionality of InvoicePlane. It also supports multiple languages and multiple payment providers such as Paypal, Stripe or even Bitcoin via Coinbase.

    In this tutorial, we will show you how to install InvoicePlane with Apache on Debian 11.

  5. How to Install Apache Cassandra NoSQL Database on Debian 11 – VITUX

    Apache Cassandra is an open-source distributed database developed for cloud computing. It provides a highly available and scalable database service with no single point of failure and no manual tuning.

    Apache Cassandra is one of the most popular databases used in artificial intelligence to help create robots. With the ability to scale up quickly using commodity hardware, Cassandra could become one of the primary data storage systems that will power future robotic data management devices.

    Apache Cassandra is a NoSQL database. With the addition of the Apache Thrift interface, Cassandra can be used to store and manage data without the use of SQL, while allowing developers to use familiar application development protocols like REST and Thrift.

    Cassandra was primarily developed by Facebook engineer Prashant Malik. The database was named after the wife of a co-founder of Facebook, who died in a car accident in 2008. It is built on Google’s BigTable architecture, with support for distribution, replication, failure detection and load balancing using Apache ZooKeeper.

  6. GNU Linux Debian – to swap or not to swap – that is the question – how to fix annoying startup boot dealying boot – message begin running scripts local-block mdadm no arrays found in config file or automatically
  7. How to install MultiMC on a Chromebook

    Today we are looking at how to install MultiMC on a Chromebook. Please follow the video/audio guide as a tutorial where we explain the process step by step and use the commands below.

  8. How to install Synfig Studio on Zorin OS 16 - Invidious

    In this video, we are looking at how to install Synfig Studio on Zorin OS 16.

  9. How to install deepin 20.4 - Invidious

    In this video, I am going to show how to install deepin 20.4.

  10. Linux Fu: Bash Strings | Hackaday

    If you are a traditional programmer, using bash for scripting may seem limiting sometimes, but for certain tasks, bash can be very productive. It turns out, some of the limits of bash are really limits of older shells and people code to that to be compatible. Still other perceived issues are because some of the advanced functions in bash are arcane or confusing.

    Strings are a good example. You don’t think of bash as a string manipulation language, but it has many powerful ways to handle strings. In fact, it may have too many ways, since the functionality winds up in more than one place. Of course, you can also call out to programs, and sometimes it is just easier to make a call to an awk or Python script to do the heavy lifting.

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today's howtos

  • How to Connect Wi-Fi using Nmcli in Linux

    Why use the Network-command-line Manager’s interface? Sometimes Ubuntu Network Manager behaves strangely, and you may be unable to connect to any Wi-Fi Hotspot using the GUI (Graphical user interface). The Network Manager may fail to start, and even after manually restarting the service through the terminal, you may still have difficulties connecting to any Wi-Fi Hotspot, even a previously recognized and stored home network. I encountered same problem on dual boot configurations and standalone Linux installs, and it was quite inconvenient, particularly during the WFH (Work from home) phase that we’re all going through.

  • How to Add Comments to UFW Rules

    In an earlier article we discussed how to add comments to iptables rules for clarity and documentation. In our opinion it is a good practice to comment anything someone else may have to work on in the future. Using comments in scripting is a common practice for good reason. We decided to write a quick tip on how to add a comment to UFW (Uncomplicated Firewall) rules. I am not a huge fan of UFW or Firewalld. In my opinion they make managing netfilter harder, not easier. That is because I started using iptables over 20 years ago. I am very comfortable with it and tend to know the necessary syntax off the top of my head. That being said, adding a comment to UFW rules is much more intuitive than any other iptables front end.

  • How to Install Drupal 9 on Ubuntu 22.04 - LinuxTuto

    Drupal is an open-source and popular content management tool that is the foundation of many websites across the internet. It has great standard features, like easy content authoring, reliable performance, and excellent security. Flexibility and modularity are some of the core principles that set it apart from the rest. In this tutorial, we will show you how to install Drupal 9 on your Ubuntu 22.04 OS.

  • How to migrate from Blogger to WordPress

    Blogger.com, as its name suggest is a blog service. Is very popular and it’s owned by google. You may want to take full control of your blog by setting up a WordPress on your server. But you still need your content: in this entry I’ll show you how to migrate from blogger to wordpress. I’m assuming you already have a brand new WordPress installation. If not, here on unixcop.com we have several articles about wordpress.

  • How to install Inkscape 1.2 on a Chromebook

    Today we are looking at how to install Inkscape 1.2 on a Chromebook. Please follow the video/audio guide as a tutorial where we explain the process step by step and use the commands below.

  • What is AWS CloudTrail and how to use it

The 10 Best Linux Apps for Musicians

If you're a musician of any kind, from beginner to professional, Linux provides an amazing assortment of free, yet powerful, platforms and applications that will boost your productivity and help you to show off your creativity. Don't let the fact that these apps are free wrongly influence your judgment. They are high-quality, professional-grade applications that rival even the most well-known, high-priced, commercial applications. These are 10 of the best Linux apps for musicians of all levels. Read more

GNOME and KDE: This Week in GNOME, Qt6 and KF6

  • #44 Five Across · This Week in GNOME

    Update on what happened across the GNOME project in the week from May 13 to May 20.

  • Okteta making a small step to Qt6 | Attracted by virtual constructs

    Old, but stable, even more in when it comes to the feature set, and still getting its polishing now and then: your simple editor for the raw data of files, named Okteta. What started in 2003 as a hex editing widget library for KDE3 (and Qt3), of course named KHexEdit (to be confused with the unrelated hex editor program that was part of KDE at that time), it turned into a first dedicated application by the title Okteta during the years 2006 to 2008 for KDE4 (and Qt4). From there on a small set of features was added once in a while, most impressively Alexander Richardson’s Structures tool in 2010,. Until then in 2013 the port to Qt5/KF5 was done (also to a good degree by Alexander). After that things had settled, the program working properly when needed, otherwise just left in the corner of the storage. Now, nearly 2 decades after the first lines were written, the next port is to be done, to Qt6 and KF6. And this time the actual port is just amazingly boring: changing a few “Qt5” to “Qt6” in the buildsystem (and later some “KF5” to “KF6” once KF6 is ready), adding Qt6::Core5Compat as helper library for 1-2 classes that had not yet been substituted, adding a “const” to the argument of an overridden virtual method, adapting some “QStringList” forward declarations… and done.

The 5 best Application Launchers for Ubuntu

Every operating system comes with an application launcher where you have to mouse over the entire menu to launch an application. But, unlike other operating systems, Linux allows us to install other launchers as an alternative. In this post, We came up with the five best application launchers for Ubuntu and their installation process. Ubuntu has a default application launcher, i.e., GNOME Shell application overview. If you are a beginner or a tech professional, browsing the entire menu to launch an application is quite bothersome. Linux community offers a wide variety of application launchers. From a rich UX-based to a bare minimum, Linux has everything to offer. These application launchers offer many themes and come with a lot of customization. Choosing the right application launcher as per your need might be difficult. That’s why we came up with the five best application launchers. Here are the top 5 application launchers for your Ubuntu. Read more