Q: How to configure 17.10 desktop's systemd-resolve dns via terminal? I can do this via network setting's manual dns input field yet if I like to manage it via terminal (ssh), what may I do to accomplish this?

A: Open the file /etc/systemd/resolved.conf in a text editor and make the desired changes. Afterwards run sudo systemctl restart systemd-resolved to activate the changes.
Common options to change in that file are in the [Resolve] section, for example:
DNS=192.168.1.1
Domains=mynet

Will set your dns server and search domain.
The resolved.conf manual page is a good source for information on how to edit the configuration file.
