A self-signed SSL certificate is a certificate that is signed by the person who created it rather than a trusted certificate authority. Self-signed certificates can have the same level of encryption as the trusted CA-signed SSL certificate.
The echo command is one of the most basic and frequently used commands in Linux. It prints the strings that are passed as arguments to the standard output.
In this tutorial, we will show you how to use the pwd command to determine your current working directory.
The ip command is a powerful tool for configuring network interfaces that any Linux system administrator should know. It can be used to bring interfaces up or down, assign and remove addresses and routes manage ARP cache and much more.
Opera is one of the most popular cross-platform web browsers in the world. It is fast, easy to use and secure browser built for the modern web.
RPM is a packaging system used by Red Hat and its derivatives such as CentOS and Fedora.
VLC is one of the most popular open source multimedia players. It is cross-platform and can play virtually all multimedia files as well as DVDs, Audio CDs, and different streaming protocols.
Apache CouchDB is a free and open-source NoSQL database developed by the Apache Software Foundation. In this tutorial, we will explain how to install the latest version of CouchDB on CentOS 7.
In Linux and Unix based systems environment variables are a set of dynamic named values, stored within the system that are used by applications launched in shells or subshells. In simple words, an environment variable is a variable with a name and an associated value.
The hosts file is used to map domain names (hostnames) to IP addresses. It is a plain-text file used by all operating systems. In this article, we’ll provide instructions about how to modify the hosts file on Linux, macOS and Windows.
Wine is an open-source compatibility layer that allows you to run Windows applications on Unix-like operating systems such as Linux, FreeBSD, and macOS.
By default, users that can log in to the system via SSH, SFTP and SCP can browse the entire filesystem including other user’s directories. This may not be a problem if these users are trusted, but if you don’t want the logged in users to navigate around the system you will need to restrict user access to their home directory. This adds an extra layer of security especially on systems with multiple users.
Cut is a command line utility that allows you to cut parts of lines from specified files or piped data and print the result to standard output. It can be used to cut parts of a line by delimiter, byte position, and character. In this tutorial, we will show you how to use the Linux cut command through practical examples and detailed explanations of the most common cut options.
Postman is a complete API development environment that helps you manage your APIs in every stage of development from designing and testing, to publishing API documentation and monitoring. Postman started as a Chrome browser extension and quickly become one of the most used API tools by developers all over the world.
When people refer to Linux, they are usually referring to a Linux distribution. Strictly speaking, Linux is a kernel, the core component of the operating system. In this tutorial, we’ll show you how to check what Linux distribution and version is installed on your system using the command line.
The du command displays the amount of file space used by the specified files or directories.
Curl is a command line tool that allows you to transfer data from or to a remote server. In this tutorial, we will show you how to install Curl on Ubuntu 18.04.
Joomla is one of the most popular open source content management systems that powers hundreds of thousands of websites. It is written in PHP and packs a ton of features that can be extended with free and premium extensions and themes. With Joomla, you can easily build your eCommerce store, personal website, social site or blog.
Minecraft is one of the most popular games of all time. It is a sandbox video game about building various structures and going on adventures.
MySQL replication is a process that allows data from one database server to be automatically copied to one or more servers.