sudo gdebi AdbeRdr9.5.5-1_i386linux_enu.deb This gives me the following output:
Reading package lists... Done Building dependency tree Reading state information... Done Building data structures... Done Building data structures... Done Adobe Reader allows you to view navigate and print PDF files. This version adds advanced forms support (save), better integration with Adobe Acrobat workflows, customizable toolbars and better overall performance. Do you want to install the software package? [y/N]:y (Reading database ... 245373 files and directories currently installed.) Preparing to unpack AdbeRdr9.5.5-1_i386linux_enu.deb ... Unpacking adobereader-enu (9.5.5) ... dpkg: error processing archive AdbeRdr9.5.5-1_i386linux_enu.deb (--install): trying to overwrite '/etc/bash_completion.d/acroread.sh', which is also in package acroread-bin 9.5.5-1precise1 dpkg-deb: error: subprocess paste was killed by signal (Broken pipe) Errors were encountered while processing: AdbeRdr9.5.5-1_i386linux_enu.deb 1 Answer
There is a conflict. Remove the package acroread-bin first
sudo apt-get remove acroread-bin After that, start the installation again
sudo gdebi AdbeRdr9.5.5-1_i386linux_enu.deb 
