sudo apt-get update [closed]

edit

I tried to update using the sudo apt-get update command in ubuntu 12.04 it gives me an error

E: Could not get lock /var/lib/apt/lists/lock - open (11: Resource temporarily unavailable)  
E: Unable to lock directory /var/lib/apt/lists/  
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?

can anyone help me how to solve this problem??