sudo apt-get update fails

Fix for:

Could not get lock /var/lib/apt/lists/lock - open (11 Resource temporarily unavailable)

ps -e | grep apt : shows if any apt processes are running

sudo kill : kill the apt process if running.

Example:
-ubuntu:~$ ps -e | grep apt
5502 ? 00:00:00 apt
5548 ? 00:00:14 apt-get
ubuntu:~$ sudo kill 5502
ubuntu:~$ sudo kill 5548
ubuntu:~$ sudo apt-get update