% jq .repositories composer.json
{
"0": {
"type": "composer",
"url": "https://repo.magento.com/"
}
}
% composer show --format json --available magento/composer-root-update-plugin | jq -r .versions
[
"2.0.2",
"2.0.0",
"1.1.2",
"1.1.1",
"1.1.0",
"1.0.0",
"0.1.1",
"0.1.0"
]