Commands sudoare the preferred way to handle elevated permissions. In the supported version of Ubuntu, using the sudo command will give high permission for 15 minutes. Standard user accounts are prohibited from performing sensitive tasks, such as viewing directory/root content. This prevents accidental user commands with big consequences. This also makes it more difficult for intruders to compromise with a system. But sometimes, you need to run administrative commands. Sudo – or Super User Do – gives you privileges to run sensitive tasks. This simple tutorial will show you how to create and add new users on Ubuntu and give sudo access…. [Read More]
Guide
What is RAID 0, RAID 1, RAID 5 and RAID 10
The term RAID is the acronym of Redundant Array of Independent Disks. This is a comprehensive guide on various levels of the RAID, like RAID 0 Raid 1, Raid 5, and Raid 10. In practice, the RAID does not indicate anything other than a technique that allows the controller to manage the different storage units and divide the data among the multiple disks present. This increases performance, security and even tolerance against any faults. How Does RAID Work? Thanks to the lightning-fast speed offered by the solid state units (SSD) and continuous technological evolutions, we have much superior hardware solutions available for our… [Read More]
Safely Remove Old Kernels From Ubuntu
Do you know that during the installation of a new kernel in Ubuntu, the old one is not deleted, but remains in the system? Over time, the number of old kernels increases and can take up quite a bit of the hard disk space. In some cases, autoremove can help (that is: sudo apt-get autoremove), it is intended to clean the system of unused packages, but it is not always effective with respect to kernel files. The autoremove command may not work for older kernels if you use the version of Ubuntu that is under development or the kernel you want to uninstall was… [Read More]
How To Dual Boot Linux/Ubuntu and Windows 10 [Beginner’s Guide]
Linux is an open source operating system that requires minimum hardware requirement to work which makes it more robust and its license makes it free for everyone to install and use it on their computers. Linux is available in various flavors and Ubuntu is very popular among them due to its user-friendly environment and vast support for hardware and software. At times, you may feel exhausted with Windows or you might need Linux for some of your projects, in such case you want to install Linux/Ubuntu and do not want to lose the already installed Windows. You can return to the… [Read More]
20 Awesome Nmap Command Examples for Linux
Nmap (Network Mapper) is a free open source utility for scanning networks and auditing network security. Nmap uses a variety of different scanning methods (UDP, TCP, TCP SYN, FTP, ICMP, etc.), and also supports a large number of additional features. Most nmap operations require root authority. When you run nmap on behalf of a normal user, a large number of functions will not be available. Below you will find 20 basic examples of using the Nmap command. You will learn how to use Nmap from the command line in Linux to find active hosts on the network and scan open ports. You will learn… [Read More]
Deploy Your First Docker Container
The command docker runserves to launch Docker containers from images. In this article, We’ll show you how to run a container from an image using the example of the latest official base Docker image of Ubuntu. We’ll show you how to install apache2inside a container with Ubuntu and how to save this container as a new image. And in the end, you will be able to run containers from this new image in the interactive and background modes. Good advice: An image vs. Container … What’s the difference? Read More → Running the Container from the Image into the Docker Do not Confuse: The Docker image… [Read More]