Today, we are going to see how to encrypt and decrypt files from command line in Linux using a free utility called GPG. GNU Privacy Guard, shortly GPG or GnuPG, is a command line encryption and signing tool to secure files. We can easily encrypt the important and confidential files and documents using GPG and send/receive them over Internet. There are plethora of methods, applications, tools, and utilities are available to encrypt and decrypt files in Linux. But, I find this method is the easiest one.
System administration professionals and home users alike share a need for the ability to be able to quickly and reliably make one-to-one copies of entire disks, both for the purposes of backup and recovery, as well as the process of easing deployments and complete refresh repairs and upgrades of existing systems.
The Raspberry Pi camera module is a great accessory for the Pi—it’s great quality, and can capture still photos and record video in full HD (1080p). The original 5-megapixel camera module was released in 2013, and a new 8-megapixel version was released in April this year. Both versions are compatible with all Raspberry Pi models. There are also two variations—a regular visible light camera, and an infra-red camera—both available for US$ 25.
Unity Tweak Tool is a popular, easy-to-use settings manager for the Unity desktop (Ubuntu Default Desktop). It provides users with a simple and fast user interface which will help users to access/customize many useful features such as Launcher, Search, workspace switcher, window shaping, Themes, Icons & fonts on unity desktop environment to make nice & better user experience on system.
This tutorial shows the installation and configuration of Monitorix on Ubuntu 16.04 (Xenial Xerus). Monitorix is a free, lightweight, open source monitoring tool designed to monitor as many services and system resources as possible on servers and desktops. It consists mainly of two programs: a collector, called Monitorix, which is a Perl daemon that is started automatically as a system service, and a CGI script called monitorix.cgi. Since 3.0 version Monitorix includes its own HTTP server built in, so you aren’t forced to install a third-party web server to use it.
When selecting a font, the decision process involves more than choosing between serif and sans serif: understanding how the font is licensed matters too. Though typographers need to be concerned with their rights to modify and extend a given font, even you as an end user should be asking yourself some questions. Do you have permission to use a font in commercial work, or in a public work at all? Can you even share that font with another person?
There are different ways to manage virtual machines (VMs) running on KVM hypervisor. For example, virt-manager is a popular GUI-based front-end for VM management. However, if you would like to use KVM on a headless server, GUI-based solutions will not be ideal. In fact, you can create and manage KVM VMs purely from the command line using kvm command-line wrapper script. Alternatively, you can use virsh which is an easier-to-use command-line user interface for managing guest VMs. Underneath virsh, it communicates wtih libvirtd service which can control several different hypervisors including KVM, Xen, QEMU, LXC and OpenVZ.