Installation

Linux

Update system with apt
Install php

# Install Composer
curl -sS https://getcomposer.org/installer | php
sudo mv composer.phar /usr/local/bin/composer
sudo chmod +x /usr/local/bin/composer
composer

Windows

Install chocolatey
Install php
Run powershell as admin

choco install composer -y

Path

# Check if composer exists in PATH
echo $PATH | grep composer
# Updating PATH for current session
export PATH=${PATH}:/home/${USER}/.config/composer/vendor/bin
# Updating PATH permanently
{
	echo '';
	echo 'export PATH=${PATH}:/home/${USER}/.config/composer/vendor/bin';
} | sudo tee --append /etc/profile > /dev/null

Appendix