Невозможно установить любое программное обеспечение или пакеты на Ubuntu 13.10

эй, я новичок в Ubuntu, я пытаюсь установить флэш-плагин, пакеты и другое программное обеспечение и т. Д., Но обнаружив эти ошибки.

rabia@rabia-N150P-N210P:~$ sudo apt-get install ubuntu-restricted-extras
[sudo] password for rabia: 
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?
rabia@rabia-N150P-N210P:~$ sudo apt-get install ubuntu-restricted-extras
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?
rabia@rabia-N150P-N210P:~$ sudo apt-get install flashplugin-nonfree
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?
rabia@rabia-N150P-N210P:~$ 

Что я делаю не так?