Let’s quickly install wp cli on Debian based Linux distro called Linuxmint. I assume that you have already installed WordPress with PHP, MySQL and web-server (apache2 or other).

PHP, Apache2, and MySQL Version

This is how you check versoins of apache2, php, and mysql installed on my Linuxmint desktop.

WordPress for wp-cli

I have installed WordPress 5.9.1 on my Linuxmint desktop

Install WP-CLI on Linuxmint

You can follow these steps to install wp-cli on any Debian based distro like Ubuntu, Debian, Linuxmint.

I also assume that you have installed curl or wget.

curl -O https://raw.githubusercontent.com/wp-cli/builds/gh-pages/phar/wp-cli.phar

php wp-cli.phar --info

chmod +x wp-cli.phar

sudo mv wp-cli.phar /usr/local/bin/wp

wp --info

Now you should get in return

Update WP-CLI

sudo wp cli update

Quickly Install wp-cli on Linux

Install wp-cli on Windows

Download wp-cli.phar manually and save it to a folder >>  c:\wp-cli

Create a file named wp.bat in c:\wp-cli with the following contents:

@ECHO OFF
php "c:/wp-cli/wp-cli.phar" %*

Add  c:\wp-cli to your path:

setx path "%path%;c:\wp-cli"

You can now use WP-CLI from anywhere in Windows command line.