To install Composer on Ubuntu Server 22.10, follow these steps: Step 1 : Download the Composer planner: curl -sS https://getcomposer.org/installer -o composer-setup.php Step 2 : Verify the installer's signature: HASH=`curl -sS https://composer.github.io/installer.sig` php -r "if (hash_file('sha384', 'composer-setup.php') === '$HASH') { echo 'Installer verified'; } else { echo 'Installer corrupt'; unlink('composer-setup.php');...