Ok, you could try to manually delete the lockfile. (sudo rm /var/lib/dpkg/lock) 
and try the command again. If that doesn't work, look for running "dpkg" 
processes in "top" and kill those.
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https://bugs.launchpad.net/bugs/1645139

Title:
  "package matlab-support 0.0.21 failed to instal.." comes up everytime
  i try to install a new software

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