Awesome! This was so much simpler than I expected. Thanks, Magic Banana.
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Fixed it, did some reading online and found that adding my user to the
lpadmin group was what was needed.
For the non-admin folks such as myself, that's
usermod -a -G lpadmin USER
as described here:
http://forums.debian.net/viewtopic.php?t=68705
Gnome's Files (Nautilus) has an ssh client built in. Before I noticed this, I
used ssh/scp/FileZilla. I think Caja lacks this feature (only Samba/Windows
Network).
"Backups", by default in Trisquel, is easy-to-use and, most importantly,
complete:
incremental backup (only backup files that are new or were modified);
compressed backup (faster and save space);
integrated with the file manager (you revert to any previous version of the
file/folder in about
FileZilla or plain Files (Nautilus). You can share any file with any computer
in your local network. That is if you prefer a GUI.