Environment variables in Jenkins

Question

Where does environment variables under the Jenkins come from?

I have checked the paths : "/etc/init.d/tomcat5" , "/usr/bin/dtomcat5", "/usr/bin/tomcat5" , "/etc/sysconfig/tomcat5", and, "/etc/profile" but couldn't see any environment variable in them especially, the ones that are related to Oracle ( Home, Ld_lib , Base,  path etc) .
The bashrc of Tomcat is having some of the oracle-related variables which I have commented out, but I still see no change in system information page of Jenkins. Any solutions for this?

Answer 1

Environment variables that are displayed in the Jenkins in the "System Information" are inherited from the system making them the inherited environment variables.

When you run a env command in a shell, you could see same environment variables as the Jenkins shows.

These environment variables are set either by the system ,or, by you in the

~/.bashrc, ~/.bash_profile.

Also, when a job executes, there are environment variables that are set by Jenkins. Although, these aren't displayed in the System Information.

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