Magento 2 useful ssh commands

php bin/magento setup:upgrade

php bin/magento cache:clean

php bin/magento cache:flush

php bin/magento cache:status

php bin/magento indexer:reindex

php bin/magento setup:di:compile

php bin/magento indexer:info

php bin/magento indexer:show-mode

php bin/magento module:status

php bin/magento module:enable Namespace_Module

php bin/magento module:disable Namespace_Module

php bin/magento deploy:mode:set developer

php bin/magento deploy:mode:set production

php bin/magento maintenance:disable

php bin/magento maintenance:status

Click Here for more details from Magento https://devdocs.magento.com/guides/v2.4/config-guide/cli/config-cli-subcommands.html