The killall Command in Linux
In this tutorial, we’ll cover the killall command in Linux. We recently posted a tutorial on the kill command in Linux where we covered the usage and the functionality of the command. Today, we’ll go over how to use the…
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How to Install Docker and Run a Docker Container on Ubuntu
Docker is an application that simplifies the process of managing application processes in containers. Containers let you run your applications in resource-isolated processes. Containers are similar to Virtual Machines, but are much less resource-intensive, as they only need the absolute…
How To Set Up And Configure UFW Firewall in Ubuntu/Debian
Let’s have a look at a really simple to use firewall, the UFW firewall. As a system administrator, it is our duty to make sure that the systems we work on are secured from attackers. There are multiple methods to…
Understanding Ubuntu’s hosts file
The hosts’ file is an extremely useful albeit small text file that stores host names with associated IP addresses. It is basically a mapping from hostnames to IP addresses. Any network protocol uses this mapping to convert hostnames to numeric…
How to install CouchDB on Ubuntu 18.04
CouchDB is a free and open-source fault-tolerant database made and maintained by the Apache Software Foundation. It is a very good choice for a NoSQL type database, where you do not want a relational database. In this tutorial, we shall…
How to Clear DNS Cache on Ubuntu 18.04
A DNS cache (sometimes called a DNS resolver cache) is a temporary database, maintained by a computer’s operating system, that contains records of all the recent visits and attempted visits to websites and other internet domains. You may want to…