apt install nautilus-dropbox
apt policy nautilus-dropbox nautilus-dropbox: Installiert: 2019.02.14-1.2 Installationskandidat: 2019.02.14-1.2 Versionstabelle: *** 2019.02.14-1.2 500 500 https://deb.debian.org/debian testing/non-free amd64 Packages 500 http://ftp.de.debian.org/debian unstable/non-free amd64 Packages 100 /var/lib/dpkg/status
deb https://deb.debian.org/debian/ unstable main contrib non-free-firmware non-free