today's howtos
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How to Nullify a File in Linux
Files, like log files, can easily and quickly grow taking up space on your hard drive. Before you realize it, you’re running low on hard drive space. You can easily nullify a file (or remove the content from a file) in Linux to shrink its size if you have limited hard drive space.
For example, the operating system and some programs may use log files to track activity and issues. These files can grow large over time, and you may not need to keep all the previous content.
Instead of opening the file and selecting all the content to delete it, you can use various command-line tools to nullify a file quickly and easily.
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Generate SSH Keys in Ubuntu - VITUX
SSH stands for Secure Shell and it is used widely as a means of accessing remote servers. The usage of SSH is recommended because it is considered a highly secure way of authenticating users remotely. Normally, we use passwords to authenticate users, however, passwords are prone to different security attacks. Therefore, they are not much recommended. A good alternative to the password-based approach for authenticating users is the use of SSH keys. Since these keys are encrypted, that is why they are considered a more secure means of user authentication. Therefore, in this article, we will be learning how to create or generate SSH keys in Ubuntu and Linux Mint.
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Automatically Update Ubuntu 22.04 LTS using Unattended upgrades
If you are Ubuntu 22.04, especially the Server edition of it then make sure your system is up to date timely. It is because to patch any security loophole as soon as developers find it and release some patch for that. Keeping the system up to date not only reduces the chances of attack but also ensures the installed packages have their newer versions. Well, who doesn’t want his system to be in its latest state but manually running a command for it every time could be a difficult task especially, if the server is on some remote location and every time you have long it using SSH. In such as situation, we can use the Debian tool called unattended-upgrades that allows users to easily download security updates and upgrades automatically after a set interval of time without any human interaction.
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Install KVM on Oracle Linux - kifarunix.com
In this tutorial, you will learn how to install KVM on Oracle Linux. KVM, an acronym for Kernel-based Virtual Machine, is an opensource, full virtualization too for Linux systems with Intel-VT or AMD-V based-processors hardware virtualization extensions.
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Thunderbird Tip: Customize Colors In The Spaces Toolbar
In our last video tip, you learned how to manually sort the order of all your mail and account folders. Let’s keep that theme of customization rolling forward with a quick video guide on customizing the Spaces Toolbar that debuted in Thunderbird 102.
The Spaces Toolbar is on the left hand side of your Thunderbird client and gives you fast, easy access to your most important activities. With a single click you can navigate between Mail, Address Books, Calendars, Tasks, Chat, settings, and your installed add-ons and themes.