How to check your NIC settings on Ubuntu

Every one of us has faced the situation of troubleshooting for nearly two hours and to realize that the cable is just unplugged. A good practice when you deal with a network issue is to start from the bottom of the OSI model – the physical layer and to proceed upwards. It will save you long hours of crashing your head into the wall.

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Setup SSH Keys with ssh-copy-id

In the article below, you can find quick and easy explanation how to generate and setup ssh keys between two hosts.
SSH keys have two major benefits – added security and easier management of multiple hosts with one public key. Nowadays, it gets more and more popular with the eve of the Automation era – you know, keeping THE passwords in a file is not the best security.

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How to install MongoDB Community Edition on Ubuntu Server 18.04

MongoDB is one of the most popular NoSQL database management systems. It is known for it’s simplicity, wide adoption and high scalability. That is why in this article we’ll show you the basics of installing a Mongo server on your cloud machine.

Installing Mongo on Ubuntu has some prerequisites. The packages available in the Ubuntu repositories are very outdated. So you’ll first need to add the official MongoDB repositories. Read More

How to create a temporary file in Linux shell

Sometime you just need to quickly put down something in a temporary file. And as easy as it seems to just type in some file name like ‘test’, ‘test1’ and so on, this soon becomes wasteful and impractical.

In this article we’ll show you a bit more professional and programmable way to create temporary files in Linux usin ‘mktemp’. Read More

How to find Java version in Linux

In the recent years Java is one of the most popular technologies including in the world of Web. In this article we’ll start with something fairly simple – how to check which is the currently installed version of Java in a Linux environment.

If you have either the JRE (Java Runtime Environment) or the JDK (Java Development Kit) you will have the java command present. Read More