What is PostgreSQL
PostgreSQL is a relational database system. It is available for free under an open source BSD license. A company does...
What is GIT
Git is a revision system running on most platforms, including Linux, POSIX, Windows and OS X. Like Mercurial, Git is...
What is Grep
Grep is a UNIX text search command. The name comes from the first letters of “global/regular expression/print”, which is a...
Hello-World
The “Hello, World!” is the first, simple and complete, program for beginners as well as a good program for testing...
How does IPtables work
There are two types of firewalls: 1. Filtering firewalls – which blocks specific packages. 2. Proxy Servers – Establishing network...
What is Puppet
Running a correct configuration on any system is extremely important. Regardless of their role, it is vital that each system...
What is YUM and how to use it
Yum is a utility for RedHat and Fedora Core Linux based distributions. It is used to install packages directly from...
Fuser
The fuser utility that comes preinstalled with Linux is a very powerful tool. As the name suggests, it provides information about...
Ansible
Ansible can be described as an open-source configuration management app, allowing a user to provision software and provides tools to...
Chmod
In Linux, unlike other operating systems, largely because it is a multi-user system, we will encounter a unique system for...
What is a Web Crawler
A search engine is a searchable program that accesses the Internet automatically and frequently and stores the title, keywords and,...
What is Django
Django is a high-level Python Web Framework that is built on the following principles: 1. Creating apps fast 2. Clean...
