Multiple apt-get install...!

[Nayyar Ahmed <nayyares@gmail.com>]

Hello All,

I want to install different packges on same
time trough apt-get install command but 
it give me error. 

debian:/home/neenix/Downloads# apt-get install gd
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?



is there any solution to it.
-- 
Nayyar Ahmad

Lecturer
Faculty Of Computer Science,
Institute Of Management Sciences,
Hayat Abad Peshawar , Pakistan.
Office : 92-091-9217404 , 9217452
Cell     :  92-0333-9139461