How to set environment variables in Jenkins?

This can be done via EnvInject plugin in the following way:

1. Create an "Execute shell" build step that runs:

   echo AOEU=$(echo aoeu) > propsfile
   

2. Create an Inject environment variables build step and set "Properties File Path" to propsfile.

Note: This plugin is (mostly) not compatible with the Pipeline plugin.

The simplest way

You can use EnvInject plugin to injects environment variables at build startup. For example:

How you know it's working