I have been testing out the installation of Koha 3.18.06.000 on Debian 8 (Jessie). Minimal Server. I downloaded Debian Jessie from https://www.debian.org/CD/http-ftp/ (Official CD/DVD images of the stable release) Everything went smoothly without any hitch except the following; Cannot write to `-' (Broken pipe) error message When adding the APT trusted keys: wget -O- http://debian.koha-community.org/koha/gpg.asc | sudo apt-key add - Solution: I replaced the pipe "|" with ">>" the key was added and thereafter I went ahead and installed Koha using the instructions at: http://wiki.koha-community.org/wiki/Koha_on_Debian I am sharing this because I though this could help someone. There could be a better and "technical" way of achieving the same. Any comment from the Koha Gurus Sitali CS -- Charles Lwanga College of Education, P. O. Box 660193, Monze, ZAMBIA. Mobile: +26 0979 869471 +26 0966 869471 SKYPE: Libsitali