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

VnStat is a console-based network traffic monitor that can be used to track network traffic on Linux systems. To install VnStat on Ubuntu 20.04 LTS, you can use the following steps: Update the package list by running the command: sudo apt update Install VnStat by running the command: sudo apt install vnstat Once the installation … Read more

To create a new user with sudo permissions on Ubuntu 20.04 LTS, you can use the following steps: Open the terminal and run the command: sudo adduser <username> this command will create a new user with the given username, it will prompt you to set a password and some personal information for the new user. … Read more

To list all failed units/services on a Linux system using systemd, you can use the systemctl command with the –failed option. The following command will list all units/services that have failed to start or have been in a failed state: systemctl –failed This command will display a list of all units that have failed to … Read more

To install KVM on a headless CentOS 8 server, you will need to perform the following steps: Ensure that your server’s CPU supports virtualization by running the following command: grep -E ‘vmx|svm’ /proc/cpuinfo This command should return output if virtualization is supported. Install the KVM and QEMU packages by running the following command: sudo dnf … Read more

To add a network bridge (br0) on a CentOS 8 system using the nmcli command, you can use the following steps: Check the available network interfaces by running the command: nmcli device Create a new bridge interface by running the command: nmcli connection add type bridge con-name br0 ifname br0 Add an IP address to … Read more