This question already has an answer here:
I attempted to install dropbox on my Ubuntu system, but now I am unable to install or uninstall any software. I get this error:
E: Unable to lock the administration directory /var/lib/dpkg/lock?
I have already tried killing
dpkg and restarting it
sudo kill -TERM PID but it immediately tries to finish the installation again and gets stuck.
How do I resolve this?