Rahul Sahu

To install VLC 3 (Vetinari) on a Linux system, follow these steps: Add the VLC repository to your system’s package manager: For Debian/Ubuntu: sudo add-apt-repository ppa:videolan/master-daily For Fedora: sudo dnf config-manager –add-repo https://download.videolan.org/pub/vlc/fedora/vlc.repo For openSUSE: sudo zypper addrepo https://download.videolan.org/pub/vlc/opensuse/ vlc Update the package list: sudo apt-get update (Debian/Ubuntu) sudo dnf update (Fedora) sudo zypper update … Read more

Here’s how to reset the root password for a Linux KVM virtual machine in a qcow2 image: Stop the virtual machine: To reset the root password, you need to stop the virtual machine first. You can stop it using the following command: virsh shutdow [VM_NAME] Convert the qcow2 image to raw format: To reset the … Read more

Here’s how to create an EC2 key using Ansible: Install the AWS CLI: To use Ansible with AWS, you need to have the AWS CLI installed. You can install it using the following command: pip install awscli Configure the AWS CLI: You need to configure the AWS CLI with your AWS credentials. You can do … Read more

The Meltdown vulnerability is a hardware-level security issue that affects many modern processors. To patch the Meltdown vulnerability on OpenBSD Unix, you can follow these steps: Upgrade to the Latest Version of OpenBSD: OpenBSD releases regular security patches to address vulnerabilities, including Meltdown. To upgrade to the latest version of OpenBSD, use the following command: … Read more

Memcached is a distributed memory caching system that is commonly used to speed up dynamic websites. However, it has also been used as a tool in DDoS amplification attacks. To secure a Memcached server and prevent DDoS amplification attacks, you can follow these steps: Limit Access to the Memcached Server: Restrict access to the Memcached … Read more

To change the theme in Ubuntu 16.04 or 17.10, you can follow these steps: Open the Unity Dash and search for “Appearance “. Open the Appearance Settings. In the Appearance Settings window, click on the ” Themes ” tab. You will see a list of available themes. To select a different theme, simply click on … Read more

To update your Ubuntu system using the terminal command line, follow these steps: Open a terminal window. Update the package index: sudo apt update Upgrade all installed packages to the latest available version: sudo apt upgrade After the upgrade process is completed, you can use the apt list –upgradable command to verify that all upgrades … Read more

To change the root password on Fedora Linux, you need to log in as the root user or use sudo to run the following steps: Open a terminal window. Type the following command to change the root password: sudo passwd Enter the current root password, and then follow the prompts to enter and confirm the … Read more

The Meltdown and Spectre vulnerabilities affect many modern computer systems, including those running FreeBSD. The following are the steps to patch these vulnerabilities on a FreeBSD system: Ensure that your system is running the latest version of FreeBSD. The Meltdown and Spectre vulnerabilities were addressed in FreeBSD releases 11.1-RELEASE and later. You can check your … Read more

To update installed packages for security in Ubuntu 18.04, you can use the following steps: Open the terminal. Update the package index: sudo apt update Upgrade all installed packages to the latest available version, including security updates: sudo apt upgrade To update the installed packages specifically for security, you can use the following command: sudo … Read more