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I am trying to install a theme in Ubuntu 16.10 and I am getting error on sudo apt-get update it shows:

awahab@awahab:~$ sudo apt-get update
[sudo] password for awahab: 
E: Could not get lock /var/lib/apt/lists/lock - open (11: Resource temporarily unavailable)
E: Unable to lock directory /var/lib/apt/lists/
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?
muru
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Syed Abdul Wahab
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2 Answers2

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You probably have some kind of program that locks the APT files. This could be:

  • Ubuntu software center installing something
  • You changing your software sources
  • The Software Update doing it's work

If you reboot the machine and issue that same command, what does happen?

fedecupe
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What this means is that another process is already using sudo. This could be any program that asked for a password when you opened it. Close all other programs and try again. If that doesn't work, reboot your computer and only open the terminal and run this command again.

Pal Kerecsenyi
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