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Elasticsearch is an open source distributed full-text search and analytics engine. It supports RESTful operations and allows you to store, search, and analyze big volumes of data in real time.

Gradle is a general-purpose build tool used primarily for Java projects, combining the best features of Ant and Maven.

Loops are one of the fundamental concepts of programming languages. Loops are handy when you want to run a series of commands over and over again until a specific condition is met.

WildFly formerly known as JBoss is a cross-platform open source application runtime written in Java that helps you build amazing applications. WildFly is flexible, lightweight, and it is based on pluggable subsystems that can be added or removed as needed.

Bash case statements are generally used to simplify complex conditionals when you have multiple different choices. Using the case statement instead of nested if statements will help you make your bash scripts more readable and easier to maintain.

Samba is a free and open-source re-implementation of the SMB/CIFS network file sharing protocol that allows end users to access files, printers, and other shared resources.

The ls command is one of the basic commands that any Linux user should know. It is used to list information about files and directories within the file system. The ls utility is a part of the GNU core utilities which are installed on all Linux distributions.

OpenCart is a free and open-source PHP e-commerce platform combining powerful features with flexibility and user-friendly interface.

With features like User Management, Multi-Store, Affiliates, Discounts, Product Reviews, Multi-lingual and multiple Payment Gateways, OpenCart is a platform of choice for many online merchants.

CentOS, as well as all other Linux distributions, is a multi-user operating system. Each user can have different permission level and specific settings for various command line and GUI application. Knowing how to add and remove users is one of the most essential skills each Linux user should know.

The EPEL (Extra Packages for Enterprise Linux) repository provides additional software packages that are not included in the standard Red Hat and CentOS repositories.

Android Studio is a full-featured cross-platform IDE that helps you build applications on every type of Android device. It is based on JetBrains’ IntelliJ IDEA and includes everything you need for Android development.

Vagrant is an open source command line tool for building and managing virtual machine environments. By default Vagrant can provision machines on top of VirtualBox, Hyper-V and Docker but many other providers such as Libvirt (KVM), VMware and AWS can be installed via the Vagrant plugin system.

Netbeans is a full-featured cross-platform IDE that helps you build applications in Java, PHP, and many other languages.

With Rsync you can mirror data, create incremental backups and copy files between systems. When copying data, you may want to exclude one or more files or directories based on their name or location.

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. Apache Cassandra is used by a number of organizations including Apple, NetFlix, eBay, and Easou.

VMware Workstation Player allows you to create and run your own virtual machines and evaluate software distributed as a virtual appliance from many software vendors available from VMware’s Solution Exchange. VMware Workstation Player is not open source and it is free only for personal non-commercial use.

If you are roaming the open source world, chances are you encounter .tar.gz file on a regular basis. Open source packages are generally available to download in .tar.gz and .zip formats. The tar command is used to create tar archives by converting a group of files into an archive. It supports a vast range of compression programs such as gzip, bzip2, lzip, lzma, lzop, xz and compress. Tar was originally designed for creating archives to store files on magnetic tape which is why it has its name “Tape ARchive”.

In this tutorial, we will show you how to create a bootable Ubuntu USB stick from the Linux terminal. You can use this USB stick to boot and test out or install Ubuntu on any computer that supports booting from USB.

In this tutorial, we will show you how to list and filter installed packages on CentOS. Knowing how to list installed packages on your CentOS system can be helpful in situations where you need to install the same packages on another machine or if you want to re-install your system.

The ping command is one of the most used utilities for troubleshooting, testing and diagnosing network connectivity issues. Ping works by sending one or more ICMP (Internet Control Message Protocol) Echo Request packages to a specified destination IP on the network and waits for a reply. When the destination receives the package, it will respond back with an ICMP echo reply.