This short guide will show you how to revoke and safely remove an SSL certificate that was obtained using the acme.sh let's Encrypt client. To remove a Let's Encrypt SSL certificate using the acme.sh command on Linux, follow these steps: Connect to your server via SSH or open a command prompt (console). Run the command: ... Read more
A database is a place where you store information. Cassandra is a type of database that is different from most databases because it does not use tables. Cassandra was developed by Facebook in 2008 as part of Facebookâs Open Compute Project. Cassandra is a NoSQL database that combines the speed of a key-value store with ... Read more
Puttygen is a tool to generate public and private SSH Keys in server applications. The SSH keys are created in the pkk format by putty but they can also be converted into other formats as used by OpenSSL. PuttyGen is available for Windows, Linux & Macintosh computers (MacOS). Putty comes with a GUI for Windows, ... Read more
You might have noticed that Ubuntu has since version Ubuntu 22.04 started to show the following message when you install or update software: Which services should be restarted? While there might be cases where you have a setup that requires a specific service not to be restarted automatically after an update, in most cases, it's ... Read more
In this guide, I will show you how to find your IP address (private IP address and public IP address) on Ubuntu Linux. I will also cover the steps for an IP location lookup to get IP location of my ipaddress, this will also show my isp. The same steps will work on other Linux ... Read more
Vim is no doubt a very powerful command line text editor, but it's not easy to master. The tool offers a sea of features, which is why remembering each and every functionality isn't an easy task. However, it's always good to know the features that are helpful in your day-to-day task. One such feature - ... Read more
Google Forms are very commonly used for surveys and questionnaires nowadays. Besides conducting such studies, they are also used in some educational institutions for quizzes and exams. This free web-based application offers us so much flexibility in designing and presenting questions that Google Form is the first name that comes to mind when we want ... Read more
If you are new to the command line of Linux, you may have read/heard that the command line is one of the most powerful features of Linux. Yes, this is true. Almost all the things you can do through the GUI, you can also do through the command line. Even more, you can even eject/close ... Read more
Though Cinnamon comes with a settings tool you can not yet customize it to the fullest. This is because it still is under heavy development and it is even not yet recommended to create super-creative themes, since it is likely that functions will be altered or added in the near future. Nevertheless, I have searched ... Read more
Linux is a multi-user operating system. Whether it's using the superuser account to execute administrative tasks or modifying the current user's access to a certain directory, you'll have to move between users at some point. Linux has several options for dealing with such difficulties. The obvious solution is to log out and log in as ... Read more