composer create project code example
Example 1: update packages composer global
composer global update
Example 2: composer install without dependencies
composer install --ignore-platform-reqs
Example 3: upgrade composer
To update composer command just find location of composer.phar and update as:
where composer #Retrieves you location of your composer.phar
cd path_to_composer.phar #Move to directory with composer.phar
php composer.phar self-update #Update your composer
Example 4: composer update
php composer.phar update
Example 5: laravel install ubuntu
sudo systemctl status apache2