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How to Install and Use Netstat on Linux (CentOS/RHEL, Debian/Ubuntu, OpenSuse...
This article provides a tutorial on how to install and use Netstat, a command-line network tool, on Linux. Netstat is a command-line utility that can be used to view network connections, routing...
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LibreNMS: What is it and how does it work?
This article covers the LibreNMS network monitoring tool, from installation and configuration to features and usage. Introduction to LibreNMS LibreNMS is a powerful open-source network monitoring...
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Linux Tip: Free Self Hosted Cloud Desktops Using Linux and TailScale
This article will show you how to build your own cloud desktop environment. Virtual desktops have become a popular way to make your work space portable. You can leave all of your applications running...
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How to Generate the Fibonacci Sequence of Numbers in Python
This quick tutorial will show you how to generate the Fibonacci sequence of numbers in Python. This is a useful example for new coders and those just learning Python as it shows how variables, loops,...
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LinuxScrew’s Linux Shell/Bash Scripting Tips
Here are some handy tips to keep in mind when writing your shell scripts in Linux. Shell scripts are a versatile way to automate your workflows in Linux (and MacOS, and now Windows, with the Windows...
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Hash Tables/Associative Arrays in JavaScript – How and Why?
JavaScript does not have a native object class called a “hash table” – but that doesn’t mean that the functionality of hash tables doesn’t exist in the language. Here’s how to use hash tables in...
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Linux Tip: Travel Securely with an Encrypted Linux USB Stick
Travel is back. Do you have a plan for what happens if your laptop, with your passwords and banking details and secret projects gets stolen? Read on for a nifty way to mitigate the inconvenience of a...
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JavaScript setAttribute() Method-What It Is/How to Use It [Examples]
JavaScript was built for adding interactivity to web pages. It can interact with and modify on-screen elements, including their HTML attributes – thats what setAttribute() does. Here’s how to use it....
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Pop!_OS on the Raspberry Pi [Review]
Pop!_OS has made it to the Raspberry Pi. This Linux distribution has become quite popular over the last few years – so how does it perform on the tiny single board computer? Read on to find out....
View ArticleGenerate a Hash from String in Javascript, with Examples
This tutorial will show you a practical way to generate a hash for a string in JavaScript, and provide working code examples you can use in your own project. What is a Hash? A Hash or Checksum is a...
View ArticleUse appendChild() in JavaScript to Add Page Elements [Examples]
The Node.appendChild() method adds a new HTML Element to the page (via the DOM). This article will show you how to use it. The DOM in JavaScript The HTML DOM (Document Object Model) is the interface...
View ArticleRemove Page Elements using JavaScript RemoveChild [Examples]
The Node.removeChild() method removes HTML Element from the current page via the DOM. This article will show you how to use it. The DOM in JavaScript The HTML DOM (Document Object Model) is the...
View Articlefor…in Loops in JavaScript – How to Use Them
The for…in loop in JavaScript loops over all of the properties in an object. This article will explain why and how to use it. JavaScript Objects JavaScript objects are a kind of variable which store...
View ArticleRunning External Programs in Python with subprocess [Examples]
This article will show you how to use the Python subprocess module to run external programs and scripts from Python. It is often necessary to call external applications from Python. Usually these are...
View ArticleSimple Guide to Python Multiprocessing/Threading [Examples]
This article will provide a simple introduction to multiprocessing in Python and provide code examples. The code and examples in this article are for Python 3. Python 2 is no longer supported, if you...
View ArticleCheck/Validate String Matches Regex in JavaScript [Examples]
This article will show you how to use Regular Expressions (Regex) to validate matching strings in JavaScript. All user input collected in your applications should be validated. If an email address is...
View ArticleThe JavaScript valueOf() Method – What Does it Actually Do?
This quick tutorial will explain the JavaScript valueOf() Method, what it does, and why you might use it. The JavaScript valueOf() method gets the primitive value of the object it is called from....
View ArticleFilter JavaScript Array With Multiple Conditions/Values [Examples]
This article will show you how to filter an array using multiple conditions, to return multiple values. Example code is provided. We’ve already covered filtering arrays in general – this article covers...
View ArticlePostreSQL Guide Introduction: What is PostgreSQL? Why Use It ?
This article is part of the LinuxScrew Guide for Developers Learning PostgreSQL. PostgreSQL is a relational database management system. It is similar to other networked SQL database servers like...
View ArticleHow to Use the Bash case Statement, With Examples
The case statement is used to choose which code to execute based on the value of a variable or expression. Here is how to use it in your Bash scripts. What Does the case Statement Do? The case...
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