Preparing to unpack .../fonts-oxygen_4%3a5.3.1-0ubuntu1_all.deb ...
Unpacking fonts-oxygen (4:5.3.1-0ubuntu1) ...
dpkg: error processing archive /var/cache/apt/archives/fonts-oxygen_4%3a5.3.1-0ubuntu1_all.deb (--unpack):
 trying to overwrite '/usr/share/fonts/truetype/oxygen/Oxygen-Sans-Bold.ttf', which is also in package ttf-oxygen-font-family 4:5.3.1-0ubuntu1~ubuntu15.04~ppa1
Processing triggers for fontconfig (2.11.1-0ubuntu6) ...
Errors were encountered while processing:
 /var/cache/apt/archives/fonts-oxygen_4%3a5.3.1-0ubuntu1_all.deb