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Vagrant is a command-line tool for building and managing virtualized development environments.

This brief tutorial explains how to simulate Linux commands but do not actually change the system.

Handling "exceptional conditions" is one of the most debated issues in programming. That could be because the stakes are high: mishandled error values can bring down even the largest systems. Since "exception conditions," by nature, are the least tested but occur with unpleasant frequency, correctly handling them can often distinguish a system that horror stories are told about to a system that "just works." read more

This tutorial gives you several options to check Apache (http) web server uptime on Linux.

Using Linux well means understanding what commands are available and what they're capable of doing for you. We have covered a lot of them on Opensource.com during 2019, and here are 10 favorites from the bunch.

Although Linux is popular for being mostly virus-free, there might still exist some-especially if you usually download stuff from unreliable sources. Since viruses are not a major issue in Linux, there is not a huge pool of antivirus available for this operating system. One of the best among these is the ClamAV antivirus which does its job pretty well. In this article, we will explain how you can install and use ClamAV and ClamTK GUI to scan Debian for viruses.

Open source is ready to get to work, and in 2019, Opensource.com had many great articles about how organizations have adopted open source software or open methods to drive their business. As open source matures, we've seen open source not just replace proprietary software, but create entirely new business models. Check out this list of five outstanding articles from Opensource.com in 2019 about running a business with open source.

Check out our most popular career-related articles to point you in the right direction for 2020.

Since its introduction, the Raspberry Pi has been one of the hottest topics on Opensource.com. This trend continued in 2019 with an impressive list of over 30 articles about various Raspberry Pi projects. The top 10 articles are covered below, but if you are a true Raspberry Pi aficionado, I encourage you to check out out our entire selection of Raspberry Pi articles.

In this post, I have explained the basics of Linux IP command through examples.

The open organization community at Opensource.com published more than 50 articles in 2019. That's more than 50 new, openly licensed resources to help you explore the ways open principles are changing the way we work, manage, and lead in modern organizations.

Check out these sysadmin technical how-tos, advice pieces, and horror stories that people in the trenches submitted for 2019.

This post explains how to use AWK printf formatting to inventory the POSIX character classes in your system, and how to "see" some invisible characters.

Java is a free, open-source and one of the most popular programming languages expressly designed for use in the distributed environment of the internet. In this tutorial, we will show you how to install OpenJDK 8, OpenJDK 11 and Oracle 8 on CentOS 8.

Topics covered in this episode: Linux Mint 19.3 Released, Dual GPU Improvements Coming to Gnome, Purism Announces Librem Server, FUSE For macOS Goes Closed Source, Life Is Strange 2

Apache Cassandra is a free and open-source NoSQL database with no single point of failure. It provides linear scalability and high availability without compromising performance.

With the end of the year approaching fast, it is a good time to look back at 2019 and go through the most popular articles on Fedora Magazine written by our contributors. In this article of the “Best of 2019” series, we are looking at developers and how to use Fedora to be a great […]

Manage Python packages using Pipenv on Linux.

Software development is a discipline rife with trade-offs. For every choice, there is an equally defensible but opposite choice. Make a method private? You're encouraging copy-paste. Make a method public? You're committing prematurely to an interface. Software developers make hard choices every minute. While all the principles in the Zen of Python cover trade-offs to some extent, the following principles take the hardest, coldest look at some trade-offs.

The Mouse Cursor on the guest VM on Redhat Linux KVM is not pointing or working properly. To resolve this issue, we need to add additional hardware on your guest VM under virt-manager utility. Here's how to do it.