On FreeBSD, you can use the pkg command to backup and restore a list of installed packages. Backup installed packages: To create a backup of the currently installed packages, you can use the command pkg backup -d backup_directory. This command will create a file called “pkg-backup.txz” in the specified directory (in this case “backup_directory”) that … Read more

setting up a WireGuard VPN on Amazon Linux 2 requires several steps. Here is an overview of the process: Install the WireGuard package: sudo amazon-linux-extras install wireguard Enable the WireGuard kernel module: sudo modprobe wireguard Create a new WireGuard interface: sudo ip link add dev wg0 type wireguard Assign IP addresses to the interface: sudo … Read more

On Amazon Linux 2, you can change the hostname without rebooting the system by following these steps: Edit the hostname file: Run the command sudo nano /etc/hostname to open the hostname file in the nano text editor. Change the current hostname to the desired hostname, then save the file and exit the editor. Update the … Read more

You can check if an Ansible collection is installed by using the ansible-galaxy command-line tool. To check if a specific collection is installed, you can use the list command with the –installed option. For example: ansible-galaxy collection list –installed This will list all the collections that are currently installed in your system. You can also … Read more

The Uncomplicated Firewall (UFW) is a firewall management tool for Ubuntu that makes it easy to set up and configure a firewall. Here’s a quick guide on how to set up a firewall using UFW on Ubuntu 22.04: Install UFW: Open a terminal and run the command sudo apt-get install ufw to install UFW. Enable … Read more

To add swap to an Amazon Linux EC2 or Lightsail instance on AWS, you can use the following steps: Connect to your instance via SSH. Check if there is any existing swap partition by running the command sudo swapon –show If there is no existing swap partition, create a new one by running the command … Read more

The ls command in Linux and Unix is case-sensitive by default, but you can make it case-insensitive by using the -f option (which tells ls to not sort the files) in combination with the -i option (which tells ls to ignore the case when sorting). Here’s an example command that runs the ls command in … Read more

To install MySQL server on Ubuntu 22.04 LTS Linux, you can use the package manager apt. First, make sure the package database is up to date by running: sudo apt update Then install the MySQL server package: sudo apt install mysql-server During the installation process, you will be prompted to set a root password for … Read more

Upgrading to a new version of OpenSUSE from the command line involves the following steps: Make sure your system is up-to-date: Before you begin the upgrade process, you should ensure that your system is fully up-to-date by running the command zypper update. This will update any existing packages to the latest version. Backup your data: … Read more

To install the dig, delv, and host commands on FreeBSD, you can use the package manager pkg. First, make sure the package database is up to date by running: sudo pkg update Then install bind-tools package, which includes dig, delv, and host commands: sudo pkg install bind-tools Alternatively, you can use the ports system to … Read more