Preparing to unpack .../unity-tweak-tool_0.0.7ubuntu2_all.deb ...
Unpacking unity-tweak-tool (0.0.7ubuntu2) ...
Processing triggers for bamfdaemon (0.5.3~bzr0+16.04.20160824-0ubuntu1) ...
Rebuilding /usr/share/applications/bamf-2.index...
Processing triggers for gnome-menus (3.13.3-6ubuntu3.1) ...
Processing triggers for desktop-file-utils (0.22-1ubuntu5) ...
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Processing triggers for libglib2.0-0:amd64 (2.48.2-0ubuntu1) ...
Processing triggers for hicolor-icon-theme (0.15-0ubuntu1) ...
dpkg: error processing package libprocps4:amd64 (--configure):
 package libprocps4:amd64 is already installed and configured
dpkg: error processing package procps (--configure):
 package procps is already installed and configured