You can check if a file does not exist in Bash by using the ! -f or ! -e operator. For example: if ! [ -f “/path/to/file” ]; then echo “File does not exist” fi Or if [ ! -e “/path/to/file” ]; then echo “File does not exist” fi Both of these commands will check … Read more

You can reset a WordPress password using the MySQL command-line interface (CLI) by following these steps: Log in to the MySQL CLI as the root user: mysql -u root -p You will be prompted to enter the root password. Select the WordPress database: use databasename; Replace “databasename” with the actual name of your WordPress database. … Read more

You can import a WireGuard profile using the nmcli command on Linux by following these steps: Create a new connection profile using the nmcli command: nmcli connection import type wireguard file /path/to/profile.conf This will import the WireGuard profile from the specified file and create a new connection profile with the same name as the file. … Read more

There are several ways to remove carriage returns (also known as “line endings” or “newline characters”) in Linux or Unix. Some common methods include: Using the “tr” command: tr -d ‘\r’ < input.txt > output.txt This command uses the “tr” (translate) command to delete all occurrences of the carriage return character (\r) from the input … Read more

To password protect a directory with Nginx using .htpasswd authentication, you can follow these steps: Create a .htpasswd file that contains a list of username and password pairs. You can create this file using the “htpasswd” command. For example: htpasswd -c /etc/nginx/.htpasswd user1 Add the following code to your Nginx server block configuration file: location … Read more

You can check if a variable is defined in a bash script by using the “if [ -z ${var} ]” or “if [ -v var ]” command. For example, if you want to check if a variable named “var” is defined, you can use: if [ -z “${var}” ]; then echo “var is not defined” … Read more

bhyve is a hypervisor for FreeBSD that allows you to run virtual machines (VMs) on top of a FreeBSD host. You can use bhyve and ZFS to install a Linux VM on a FreeBSD host. Here are the general steps to do this: Create a ZFS pool on the host system: zpool create -f mypool … Read more

Homebrew is a package manager for Mac OS that allows you to easily install and manage software packages. To install Homebrew on Mac OS, you can use the following steps: Open the Terminal application on your Mac. Run the following command in the terminal to install Homebrew: /bin/bash -c “$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/main/install.sh)” Once the installation … Read more

Homebrew is a package manager for Mac OS that allows you to easily install and manage software packages. To install Homebrew on Mac OS, you can use the following steps: Open the Terminal application on your Mac. Run the following command in the terminal to install Homebrew: /bin/bash -c “$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/main/install.sh)” Once the installation … Read more

ShellCheck is a static analysis tool for shell scripts that helps to identify and fix common issues and errors. You can install ShellCheck on FreeBSD using the package manager pkg. First, ensure that the package manager is updated by running the command: pkg update Next, install ShellCheck by running the command: pkg install shellcheck Once … Read more