Composer - как обновить 1.x до 2.x версии

Алгоритм обновления composer 1.x --> 2.x:

# php -r "copy('https://getcomposer.org/installer', 'composer-setup.php');"
# php -r "copy('https://composer.github.io/installer.sig', 'composer-setup.sig');"
# php -r "if (hash_file('sha384', 'composer-setup.php') === trim(file_get_contents('composer-setup.sig'))) { echo 'Installer verified'; } else { echo 'Installer corrupt'; unlink('composer-setup.php'); } echo PHP_EOL;"
# php composer-setup.php --install-dir=/usr/local/bin --filename=composer
# php composer-setup.php --install-dir=/usr/bin --filename=composer

Удалить установочный файл:

# php -r "unlink('composer-setup.php');"

Проверка:

# which composer
/usr/local/bin/composer
# composer -V
Do not run Composer as root/super user! See https://getcomposer.org/root for details
Continue as root/super user [yes]? yes
Composer version 2.2.25 2024-12-11 11:58:02