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Basically bash function is a set of commands. Bash function mainly used for executing a single or group of commands again and again. Functions make it easier to read the code and execute meaningful group code statements.

sudo is probably the most famous command in the Linux world. It allows ordinary users to run other commands or programs using the superuser privileges, but it doesn't show you the password while you are typing it. This behavior should change by default.

For the last few years, I've been helping Greenpeace build its first fully open source software project, Planet 4. Planet 4 is a global engagement platform where Greenpeace supporters and activists can interact and engage with the organization. The goal is to drive people to action on behalf of our planet. We want to invite participation and use people power to battle global issues like climate change and plastic pollution. read more

Linux operating systems are great for making unique customizations and tweaks to make your computer work better for you. For example, the i3 window manager encourages users to think about the different components and pieces that make up the modern Linux desktop. Fedora has two new packages of interest for music tweakers: mpris-scrobbler and playerctl. […]

As per our first part, you now have your cluster all assembled and ready and want to install it. Do something with it already. For this we will have to download Raspbian Stretch Lite - a Linux distribution based on Debian and made especially for the Raspberry Pi. The ”Lite” version has an image file of 1,8GB and contains only the base system.

Reducing your consumption of meat, dairy, and processed foods is better for the planet and better for your health. Changing your diet can be difficult, but several open source Android applications can help you switch to a more plant-based diet. read more

You may know that Canonical just launched a new version of Ubuntu, but is it worth the upgrade? Does Ubuntu 19.04 solve any problems you currently have?

The Ubuntu MATE 19.04 operating system has been released as part of the Ubuntu 19.04 (Disco Dingo) operating system series, a release that adds latest software updates and some interesting new features.

2DayGeek: Learn how to monitor disk I/O usage or statistics in Linux.

What can be done to help save the planet? The question can seem depressing at a time when it feels like an individual's contribution isn't enough. But, who are we Earth dwellers if not for a collection of individuals? So, I asked our writer community to share ways that open source software or hardware can be used to make a difference. Here's what I heard back. 9 ways to save the planet with an open source twist 1. Disable the blinking cursor in your terminal. read more

Learn how to mitigate the ICMP timestamp vulnerability in Linux by blocking certain types of Internet Control Message Protocol at the firewall.

This is the second in a new series highlighting best-of-breed utilities. We’ll be covering a wide range of utilities including tools that boost your productivity, help you manage your workflow, and lots more besides. For this article, we’ll put lnav under the spotlight.

Open source monitoring system Prometheus has integrations to track many types of time-series data, but if you want an integration that doesn't yet exist, it's easy to build one. An often-used example is a custom integration with a cloud provider that uses the provider's APIs to grab specific metrics. In this example, though, we will integrate with the biggest cloud provider of all: Earth. read more

In this guide, we will go over the most important and frequently used Nginx commands including starting, stopping, and restarting Nginx.

Color picker is another cool flatpak app, for developers and UI designers that need to experiment with colors. Most development software comes with their own color palette tool but some lacks it. So this app is one way to generate customized color for your project during the development process.

The screen command in Linux is used creating terminal multiplexing. By using screen you can run any number of the terminal based applications. Screen command can enable you to resume your work where last time you exited the application.

Debian 10 Buster is nearing its final stable release. Excited about the new major release? Here’s a list of the new features in Debian 10.

Spreadsheets (LibreOffice Calc, Gnumeric, Excel) make dates out of entries that aren't dates. They do it to be helpful, but right around the world, at any hour and in many languages, users are shouting "IT'S NOT A DATE, YOU STUPID SPREADSHEET!" Non-date to date isn't the only unwanted conversion that spreadsheets are guilty of, as I recently learned.

Docker is an application used to manage application processes in containers. Containers run applications in resource-isolated process. By using docker you can build, test and deploy applications that can run anywhere as portable and self-sufficient containers.

BoltWire CMS is an open-source content management system that is easy-to-install and offers many features. Written in PHP, BoltWire CMS offers features that may not be available with other PHP-based CMSes, like WordPress, Joomla, or Drupal – instead, it helps you create personal or business websites in minutes by just uploading the content of these sites to your server.