composer

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How to install composer on unix-like machines

curl -sS https://getcomposer.org/installer | php
sudo mv composer.phar /usr/local/bin/composer

Ref: https://www.digitalocean.com/community/tutorials/how-to-install-composer-on-ubuntu-20-04-quickstart

Composer bitbucket github login

https://getcomposer.org/doc/articles/authentication-for-private-packages.md#bitbucket-oauth

Note: it doesn't generate token in bitbucket if callback url is not set.

Ref:

Install specific version of composer

php composer-setup.php --version=1.0.0-alpha8

Ref:

• https://getcomposer.org/download/
• https://schophel.wordpress.com/2021/01/19/how-to-downgrade-or-install-a-specific-version-of-composer/