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

I am trying to install cheese

ubuntu@ubuntu:/usr/src/linux-headers-3.5.0-23-generic$ sudo apt-get install cheese
[sudo] password for ubuntu:
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?

how to solve this issue please help.