How to run "Download" action on folder in SeaDrive on Linux?

SeaDrive on Windows have explorer extenstion, that allow to run “Download” action on selected folder. How can we run same action SeaDrive on Linux via command line interface?

Where do you even get the Seadrive client for Linux - I don’t see it on seafile.com download section? I would like to use it, but seems it is not really supported anymore?