Removing Dropbox from Trusty Tahr

Prompt:~$ dropbox status
Dropbox isn't running!
Prompt:~$ rm -rf ~/.dropbox-dist
Prompt:~$ rm -rf /var/lib/dropbox
rm: cannot remove ‘/var/lib/dropbox’: Permission denied
Prompt:~$ rm -rf ~/.dropbox*
Prompt:~$ sudo apt-get remove nautilus-dropbox
[sudo] password:
E: Could not get lock /var/lib/dpkg/lock - open (11: Resource temporarily unavailable)
E: Unable to lock the administration directory (/var/lib/dpkg/), is another process using it?
Prompt:~$ sudo apt-get remove nautilus-dropbox
E: Could not get lock /var/lib/dpkg/lock - open (11: Resource temporarily unavailable)
E: Unable to lock the administration directory (/var/lib/dpkg/), is another process using it?
Prompt:~$ sudo apt-get remove dropbox
E: Could not get lock /var/lib/dpkg/lock - open (11: Resource temporarily unavailable)
E: Unable to lock the administration directory (/var/lib/dpkg/), is another process using it?
Prompt:~$ rm /etc/apt/source.d/dropbox
rm: cannot remove ‘/etc/apt/source.d/dropbox’: No such file or directory
Prompt:~$ sudo apt-get remove --purge nautilus-dropbox
E: Could not get lock /var/lib/dpkg/lock - open (11: Resource temporarily unavailable)
E: Unable to lock the administration directory (/var/lib/dpkg/), is another process using it?
Prompt:~$ sudo rm /var/lib/apt/lists/lock
Prompt:~$ sudo rm /var/cache/apt/archives/lock
Prompt:~$ dropbox status
Dropbox isn't running!
Prompt:~$ rm -rf /var/lib/dropbox
rm: cannot remove ‘/var/lib/dropbox’: Permission denied
Prompt:~$ sudo rm -rf /var/lib/dropbox
Prompt:~$ rm -rf ~/.dropbox*
Prompt:~$ sudo apt-get remove nautilus-dropbox
E: Could not get lock /var/lib/dpkg/lock - open (11: Resource temporarily unavailable)
E: Unable to lock the administration directory (/var/lib/dpkg/), is another process using it?
Prompt:~$ cd /var/lib/dpkg/
Prompt:/var/lib/dpkg$ dir
alternatives  available-old  diversions-old  parts	   status-old
arch	      cmethopt	     info	     statoverride  triggers
available     diversions     lock	     status	   updates
Prompt:/var/lib/dpkg$ rm lock
rm: remove write-protected regular empty file ‘lock’? y
rm: cannot remove ‘lock’: Permission denied
Prompt:/var/lib/dpkg$ sudo rm lock
Prompt:/var/lib/dpkg$ dir
alternatives  available-old  diversions-old  statoverride  triggers
arch	      cmethopt	     info	     status	   updates
available     diversions     parts	     status-old
Prompt:/var/lib/dpkg$ cd
Prompt:~$ rm -rf /var/lib/dropbox
Prompt:~$ rm -rf ~/.dropbox*
Prompt:~$ sudo apt-get remove nautilus-dropbox
E: dpkg was interrupted, you must manually run 'sudo dpkg --configure -a' to correct the problem.
Prompt:~$ sudo apt-get remove dropbox
E: dpkg was interrupted, you must manually run 'sudo dpkg --configure -a' to correct the problem.
Prompt:~$ rm /etc/apt/source.d/dropbox
rm: cannot remove ‘/etc/apt/source.d/dropbox’: No such file or directory
Prompt:~$ sudo apt-get remove --purge nautilus-dropbox
E: dpkg was interrupted, you must manually run 'sudo dpkg --configure -a' to correct the problem.
Prompt:~$ sudo dpkg --configure -a
Setting up nautilus-dropbox (1.6.1-1) ...
Dropbox is the easiest way to share and store your files online. Want to learn more? Head to https://www.dropbox.com/
Downloading Dropbox... 39%