➜  mono-4.4.0 sudo apt-get install -y debhelper
Reading package lists... Done
Building dependency tree       
Reading state information... Done
debhelper is already the newest version.
debhelper set to manually installed.
The following package was automatically installed and is no longer required:
  libgconf2-4
Use 'apt-get autoremove' to remove it.
0 upgraded, 0 newly installed, 0 to remove and 41 not upgraded.