For reference
This is an old revision of the document!
https://easylinuxtipsproject.blogspot.com/p/speed-mint.html#ID1.1
find . -type d -exec chmod 770 -- {} +
find . -type d -exec chmod 2770 -- {} +
(-- to prevent name starting with dash as conflict)
https://help.rapidseedbox.com/en/articles/5999160-how-to-create-an-ssh-key-pair-and-use-it-to-login-as-root-enable-direct-root-ssh-login
https://winscp.net/eng/docs/faq_su