Linux

 https://hungwei0331.pixnet.net/blog/post/351125458

Synology

 https://mariushosting.com/how-to-ssh-into-a-synology-nas/

https://techjogging.com/installing-and-using-pip-on-synology-dsm.html

https://community.synology.com/enu/forum/1/post/145224

https://kb.synology.com/zh-tw/DSM/help/DSM/AdminCenter/connection_ddns?version=7

http://timsherratt.org/digital-heritage-handbook/docs/python-pip-virtualenv/

https://kb.synology.com/en-me/DSM/tutorial/How_do_I_customize_the_alias_port_or_domain_for_specific_Synology_services