Rahul Sahu

To forcefully renew a Let’s Encrypt certificate, you will need to use the certbot command-line tool. The basic command to renew a certificate is: sudo certbot renew This command will check all installed certificates and renew them if they are about to expire. To forcefully renew a specific certificate, you can use the –force-renewal or … Read more

Adding and deleting users on Alpine Linux can be done using the adduser and deluser commands, respectively. Here are the steps to add and delete a user on Alpine Linux: Adding a user: Open a terminal and log in as the root user by typing su and entering the root password. To add a new … Read more

To set up a WireGuard VPN server on Debian 10, you will first need to install the WireGuard package by running the following command: sudo apt install wireguard -y Next, you will need to generate the necessary key pairs for the server and clients using the wg command: umask 077 wg genkey | tee privatekey … Read more

Installing LXD (Linux container hypervisor) on Ubuntu 20.04 LTS using the apt package manager is a simple process and can be done by following these steps: First, update the package list by running the command: sudo apt update Next, you need to install the LXD package and its dependencies by running the command: sudo apt … Read more

To update all installed packages to their latest versions, including security updates, on Ubuntu 22.04 or 20.04, you can use the following command: sudo apt update && sudo apt upgrade -y This command first updates the package lists, then upgrades all currently installed packages to their latest versions. The -y flag is used to automatically … Read more

Upgrading Fedora 31 to Fedora 32 using the command line interface (CLI) can be done by following these steps: First, ensure that your current Fedora 31 installation is up-to-date by running the command: sudo dnf update Next, you need to install the fedora-upgrade package by running the command: sudo dnf install fedora-upgrade Now, you can … Read more

To remove the last character from each line using the sed command, you can use the following command: sed ‘s/.$//’ file.txt This command will use the s command to perform a substitution, replacing the last character in the line (.$) with nothing (//). The result will be the original line with the last character removed. … Read more

Installing Squid Proxy Server on Ubuntu 20.04 LTS Linux can be done in a few simple steps. Here is an overview of the process: Update your package lists by running the command: sudo apt update Install Squid by running the command: sudo apt install squid Once the installation is completed, the Squid service will start … Read more

Here are the general steps to set up a WireGuard VPN server on Ubuntu 20.04: Install the WireGuard package by running the following command: sudo apt install wireguard Create a new WireGuard configuration file for the server. You can do this by running the following command: sudo nano /etc/wireguard/wg0.conf This will open the Nano text … Read more

Setting up an OpenVPN server on Ubuntu 20.04 LTS can be done in a few simple steps. Here is an overview of the process: Install OpenVPN by running the command: sudo apt install openvpn Create a directory to store the server configuration files by running the command: sudo mkdir /etc/openvpn/server Generate the necessary certificate and … Read more