Install Dropbox via command line
The Dropbox daemon works fine on all 32-bit and 64-bit Linux servers. To install, run the following command in your Linux terminal.
32-bit:
$ cd ~ && wget -O - "http://www.dropbox.com/download?plat=lnx.x86" | tar xzf -
64-bit:
$ cd ~ && wget -O - "http://www.dropbox.com/download?plat=lnx.x86_64" | tar xzf -
Next, run the Dropbox daemon from the newly created .dropbox-dist folder.
$ ~/.dropbox-dist/dropboxd
Direct links
For 64 bit : Download Here
For 32 bit : Download Here
Add the official PPA
So that you get regular updates
Add Dropbox’s repository key
sudo apt-key adv --keyserver pgp.mit.edu --recv-keys 5044912E
Add Dropbox’s repository
sudo add-apt-repository "deb http://linux.dropbox.com/ubuntu $(lsb_release -sc) main"
update and install Dropbox
sudo apt-get update && sudo apt-get install nautilus-dropbox
Follow the instructions on the screen.
Install by any method You find easy(i prefer the ppa though).Hope it helps
~/.dropbox-dist/dropboxd? You should edit your question to tell us this, and also to tell us what you mean by "Runnung Ubuntu on Windows..." Do you have a Wubi system (where you installed Ubuntu while running Windows, then rebooted to get into Ubuntu)? Are you using a virtual machine? – Eliah Kagan Jun 23 '12 at 7:19