More and more internet access providers are closing port 25 to reduce spam except for connections to their own mail…

Most Linux servers are administered on the command line e.g. through an SSH connection. In the following tutorial, I will…

Gradle is a build automation tool that is based on a concept called ‘incremental builds’. It speeds up the development…

Apache Maven is a build automation tool that is used in many projects today. Maven provides coders and DevOps with…

Every current disk includes a built-in monitoring feature known as SMART that keeps track of faults. On Linux, there is…

Here is the solution if you've got the following error message when updating package lists on Debian (apt-get update): The…

The shell setting in /etc/passwd determines whether a Linux system user may log in via the shell or over SSH.…

Have you ever looked in the apache config files to see where a website's virtual host is defined? The apache2ctl…

Sometimes you require a certain file from a Debian .deb package. For example, because you accidentally deleted a file. Or…

If you have a directory with many files (a few thousand in my case) and need to know which one…