caja-dropbox software package provides Dropbox integration for Caja, you can install in your Ubuntu 16.04 LTS (Xenial Xerus) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install caja-dropbox
caja-dropbox is installed in your system.
Make ensure the caja-dropbox package were installed using the commands given below,
$ sudo dpkg-query -l | grep caja-dropbox *
You will get with caja-dropbox package name, version, architecture and description in a table
| Distro | Ubuntu 16 04 lts xenial xerus |
| Section | X Window System software |
| Package | caja-dropbox |
| Version | 1.12.0-3 |
| Description | Dropbox integration for Caja |
| Sub Section | X76 |