How to Install Composer on Linux Debian 12
In this video we will install, use, and then uninstall Composer on a Linux Debian 12 server. The commands used in this tutorial:
Install Composer on Debian 12
Update package list and install required packages
sudo apt update
sudo apt install -y php-cli unzip curl
Download Composer installer script
curl -sS https://getcomposer.org/installer -o composer-setup.php
Verify the installer script's SHA-384 hash (replace "hash_value" with the latest hash from https://getcomposer.org/download/)
HASH_VALUE=$(curl -sS https://composer.github.io/installer.sig)
php -r "if (hash_file('sha384', 'composer-setup.php') === '$HASH_VALUE') { echo 'Installer verified'; } else { echo 'Installer corrupt'; unlink('composer-setup.php'); } echo PHP_EOL;"
Install Composer globally
sudo php composer-setup.php --install-dir=/usr/local/bin --filename=composer
Remove the installer script
rm composer-setup.php
Check Composer installation
composer --version
Update Composer to the latest version
composer self-update
Uninstall Composer
sudo rm /usr/local/bin/composer
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