I have a RPi running a server to which I wish to transfer some SSL certificate files to be able to establish a secure connection from a browser. I presently have connected headless to the RPi from an OSX10.11 terminal window on my Mac using ssh to successfully create a root password (can login to the root account from that terminal).
An earlier post Copy files from OSX to/from Pi suggested, as the top answer, that Mac users could install the Appletalk protocol on the RPi using 'netatalk' and then use the Finder command in OSX, Connect to Server using afp://192.168.xxx.yyy to drag/drop the files onto the RPi. Moving files to the pi account proved very successful with the pi user credentials in the afp login window on the Mac. However, I cannot use the root user credentials to establish the connection.
I am aware that use of the root user has security implications, but I have a small trusted group of networked Macs behind a secure firewall and only intended to allow the connection for as long as it took to move the ssl certificate files directly into the necessary apache root directories on the RPi before returning to the Mac ssh terminal window to complete the SSL configuration.
The question is why can't I do this rather than moving the files twice via the pi user account?