Is there a way to add a parameter to all the Jenkin jobs I have access to?

Question

I am trying to add a parameter called timeout in all my Jenkin jobs.

Answer 1

I think what you are looking for are called Jenkins Pipeline Environment variables.

The Jenkins pipeline environment variables facilitate the benefits like :

1. Injection of sensitive data at runtime to avoid the hardcoding into the pipeline.
2. Addition of job parameters available only at runtime, but not at design time.
3. Boolean values set in environment variables help certain toggle stages in a pipeline via a parameter that describes a specific subset of tests you want to run.
4. Providing IDs of credentials defined in Jenkins.

I think the first point is the benefit you are looking for.