Knowledge:Linux Debian

User and service

 $ sudo adduser --disabled-password openkm
 $ sudo adduser openkm admin
 $ sudo vim /etc/init.d/tomcat

Script from http://wiki.openkm.com/index.php/Configure_Tomcat_service

 $ sudo chmod 755 /etc/init.d/tomcat
 $ sudo update-rc.d tomcat defaults

Required packages

Install basic packages:

 $ sudo aptitude install apache2 rdiff-backup ghostscript msttcorefonts imagemagick
 $ sudo aptitude install libreoffice clamav unzip python-software-properties

Install Java JDK (Ubuntu 12.04 - Precise Pangolin):

 $ sudo vim /etc/apt/sources.list.d/sun-jdk.list 

Add this entry:

 deb http://openkm.com/download/okm/jdk/deb /

And now update and install:

 $ sudo apt-get update
 $ sudo apt-get install sun-java6-jdk sun-java6-fonts

Uninstall OpenJDK packages:

 $ dpkg -l | grep openjdk
 $ dpkg -l | grep icedtea
 $ sudo apt-get purge icedtea-netx icedtea-6-jre-jamvm icedtea-6-jre-cacao openjdk-6-jre openjdk-6-jre-lib openjdk-6-jre-headless
 $ sudo apt-get autoremove