More and more internet access providers are closing port 25 to reduce spam except for connections to their own mail servers. If you run your own email server and have problems connecting to it on port 25, you can enable port 465 (SMTPS) in postfix as a workaround. Edit the /etc/postfix/master.cf file: nano /etc/postfix/master.cf and ... Read more
In my research on Unity issues, I've observed that several users see nothing on the desktop after logging in (no sidebar, no top bar... nothing), just the background image. Even worse, when you press Alt+Ctrl+T, the terminal window doesn't show up either. Fortunately, I've found a few solutions to this problem as well, which I'll ... Read more
More than a decade ago, the world was introduced to the wonders of cryptocurrencies and the financial landscape has never been the same. First, there was Bitcoin, then came Litecoin, followed by Ripple and then Titcoin, and the list kept going on and on, and now it seems like with each passing day we are ... Read more
There are cases when you need to switch between two applications in your work. For example, a common use case is reading commands/instructions from a web page opened in a web browser and trying them out in a command-line terminal. I'm sure many of you are used to the Alt+Tab method of switching between application ... Read more
Most Linux servers are administered on the command line e.g. through an SSH connection. In the following tutorial, I will explain several shell commands that make it easy to view log files on the Linux command line (shell). These commands will work on all major Linux distributions incl. AlmaLinux, CentOS, Debian, Fedora, RockyLinux, and Ubuntu. ... Read more
OpenSSL Cryptography and SSL/TLS Toolkit is an open-source, full-featured package used in Transport Layer Security (TLS) and Secure Socket Layer (SSL) protocols to provide secure communication between client and server. This commercial-grade and robust toolkit is widely used by various programs like PHP, Internet servers, comprising the majority of HTTPS websites. Most Linux distributions come ... Read more
Featherpad is a unique text editor for programming. It directly competes with major text editors. However, Featherpad is based on Qt engine. It has some unique features like drag and drop of attachment. The tabs can be detached and the editor can autosave the progress. I will install it on Ubuntu 22.04 and show you ... Read more
For graphic designers who are just starting out in the industry, paying up thousands of dollars to Adobe for their suite of applications is a monumental task. Fortunately, there are various open-source applications looking to bridge that gap for free. If you’re looking for an alternative to Adobe Illustrator to flex your vector graphic designing ... Read more
Slack is an up-and-coming application for communicating in the workplace. It comes with all of the standard functionality, but its extra features are amazing. Slack offers call and video conversations in addition to text communication. Slack has a channel function that allows you to organize your conversations into sub-categories and allows you to search for ... Read more
There are several text editors available for Linux and one of them is gEdit. It is developed by Gnome and can be installed from standard Ubuntu repositories. You will see how to install it. I am using Ubuntu 20.04 Mate edition, and it does not come preinstalled. The text editor has an enormous number of ... Read more