[plug] How to set 'global' environment variables at boot time?

[Fred Janon]

Hi,
I am working on a script to start Tomcat on a CentOS like OS (AWS EC2 Linux).
I need to configure a 'global' environment variable in the system that is set when the system boots and before the tomcat scripts executes to start the service. I did some research on z InnerNet and tried quite a few things with no success.
Basically I need to set and export the environment variable with a path ($CATALINA_HOME), maybe from /etc/profile?, and then read it from another script at boot time. Also how do I read and display the variable from the script to verify it is set properly?
All the scripts I've seen hard code the path, which I want to avoid.
Any suggestion?
Thanks
Fred
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.plug.org.au/pipermail/plug/attachments/20120911/561f4f87/attachment.html>