Installing htop on macOS is a simple process that can be done using the Homebrew package manager. Here are the steps to install htop on macOS: Install Homebrew by running the following command in the terminal: /bin/bash -c “$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install.sh)” Once Homebrew is installed, you can use it to install htop by running the … Read more

Setting up an OpenVPN server on CentOS 7 is a relatively straightforward process that can be completed in just a few minutes. Here are the steps to set up an OpenVPN server on CentOS 7: Install the OpenVPN package by running the following command: sudo yum install epel-release sudo yum install openvpn Create a directory … Read more

To set up an OpenVPN server on Ubuntu 18.04 LTS, you can follow these steps: Install the OpenVPN package by running the command: sudo apt-get install openvpn Create a directory for the server configuration files: sudo mkdir /etc/openvpn/server Copy the sample server configuration file to the server directory: sudo cp /usr/share/doc/openvpn/examples/sample-config-files/server.conf.gz /etc/openvpn/server/ Unzip the server … Read more

The dig command is not installed by default on CentOS 7. However, it can be easily installed using the package manager yum. Here are the steps to install the dig command on CentOS 7: Open a terminal window on your CentOS 7 system. Update the package list by running the following command: sudo yum update … Read more

In Ubuntu, you can enable and set up automatic unattended security updates using the unattended-upgrades package. Here are the steps to do this: Install the unattended-upgrades package: sudo apt-get install unattended-upgrades Configure the package to automatically download and install security updates by editing the configuration file located at /etc/apt/apt.conf.d/50unattended-upgrades. sudo nano /etc/apt/apt.conf.d/50unattended-upgrades Find the line … Read more

Upgrading an Ubuntu 16.04 LTS instance on AWS Lightsail to 18.04 LTS requires a few steps. Here’s an overview of the process: Take a snapshot of your Lightsail instance: This will create a backup of your current system in case something goes wrong during the upgrade process. Update the package lists: Run the command sudo … Read more

Here are the steps to install PHP 7.2 with FPM (FastCGI Process Manager) for Nginx on FreeBSD: Install the PHP package using pkg: pkg install php72 Install the PHP-FPM package: pkg install php72-fpm Enable PHP-FPM in the system: sysrc php_fpm_enable=yes Start the PHP-FPM service: service php-fpm start Configure Nginx to use PHP-FPM. Edit the Nginx … Read more

In Bash, the for loop can be used to iterate over a list of items. Here are some examples of using the for loop in Bash: Loop over a range of numbers: for i in {1..10}; do echo $i done Loop over a list of items: for i in item1 item2 item3; do echo $i … Read more

Here are the general steps to create a virtual machine (VM) using a qcow2 image file in KVM: Install KVM on your system if it is not already installed. sudo apt-get install qemu-kvm libvirt-bin Create a new virtual machine using the virt-install command. This command is used to create new virtual machines from the command … Read more

You can use the ps command to check if a process is running or not on Linux/Unix. The ps command lists all running processes on the system. To check if a specific process is running, you can use the grep command to filter the output of the ps command. For example, to check if the … Read more