The “PHP Warning: Constant ABSPATH already defined in wp-config.php” error message occurs when the ABSPATH constant is defined more than once in the wp-config.php file. The ABSPATH constant is used to define the absolute path of the WordPress installation on the server. It is defined in the wp-config.php file, and should only be defined once. … Read more
There are several ways to convert JSON to CSV using Linux or Unix shell, here are a few popular options: Using jq: jq is a command-line JSON processor that can be used to convert JSON to CSV. The basic command to convert a JSON file to CSV using jq is: jq -r ‘.’ input.json | … Read more
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