Docker is one of the most used virtualization technologies nowadays. Have you ever heard someone talking about it? It could happen at a conference, in a work meeting, if you know someone in the IT sector, etc. Docker is used by a lot of people in a lot of different projects, and if you don’t know it yet…

FTP CFTHave you ever heard about FTP? It is a very popular protocol used to transfer files between servers or between a user’s computer and a server. While some people consider it to be insecure and instead prefer other options like SFTP, it is nonetheless used by thousands of users around the world, and today we are going…

Amazon Web Services, or AWS, is a widely known collection of cloud services created by Amazon. It is a big suite of cloud services that can be used to accomplish a lot of different tasks, all of them based on the cloud, of course, so you can access these services from any location at any time you want….

PostgreSQL is a very popular database engine used by a lot of websites, is one of the most used relational database management system available, and after installing it we can use some tools that it includes. One of these tools is a command-line tool called psql, and today we are going to learn a lot about it, and…

Many times when we are working on Linux we have come across a pretty common error regarding source. This error is source: command not found, and today we are going to explain to you everything that you need to know about it. In this article, you will learn what is source, why this error happens and of course,…

The ifconfig command is a very popular tool available on most Linux distros. The name “ifconfig” comes from “Interface Configuration”, it is used to check our system’s network interface and we can also use it to change some of the network interface settings. By using ifconfig we can quickly take a look at the different settings of our…