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How to fix E: could not get lock /var/lib/dpkg/lock - open (11 resource temporarily unavailable) in ubuntu 12.04

Use the following commands to resolve this problem

1. Search for processes
     ps -A | grep apt-get

 2. See if there is any process running as apt-get then kill that process using the process id
     sudo kill -9 <process id>
    
     for example: if the process id  9119 then command will be sudo kill -9 9119
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