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E: Could not get lock /var/lib/apt/lists/lock - open (11: Resource temporarily unavailable)
E: Unable to lock directory /var/lib/apt/lists/
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marked as duplicate by Eric Carvalho, Kevin Bowen, Radu Rădeanu, AgentCool, Jorge Castro Jul 6 '13 at 14:34

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1 Answer 1

This means that some updating software is already running. If you are using the terminal to do sudo apt-get update and sudo apt-upgrade be sure that the Software Center and Synaptic are closed.

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