I have a problem with this code in terminal:

sudo apt-get install gnome-shell

It's not working

Look at this error

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?

What should i do to install gnome3?

Thank you for that link.

I typed this code in terminal:

sudo rm /var/lib/apt/lists/lock

And this:

sudo rm /var/cache/apt/archives/lock

And my previous problem has solved.

But when I type this in terminal again:

sudo apt-get install gnome-shell

It's doesn't work again!

Look at this error:

Reading package lists... Done

Building dependency tree    

Reading state information... Done

gnome-shell is already the newest version.

0 upgraded, 0 newly installed, 0 to remove and 219 not upgraded.

How can I use gnome3 interface?