Get username logged in Jenkins from Jenkins Workflow (Pipeline) Plugin

Question

I am using the Pipeline plugin in Jenkins by Clouldbees (the name was Workflow plugin before), I am trying to get the user name in the Groovy script but I am not able to ach

Answer 1

Edit: I re-read the question - the below only gets you the user running the build (which technically is often more interesting), not the one triggering the build in the frontend (be it REST-API or WebUI). If you have Jenkins impersonation enabled, then I believe the result should be equivalent, otherwise this will only get you the user who owns the jenkins agent on the build machine.

Original answer:

Another way would be to

sh 'export jenkins_user=$(whoami)'

Downside: Linux-dependent, difficult to port across multiple agents in a single build (but then, the auth context may be different on each slave)

Upside: No need to install plugins (which on shared/large Jenkins instances can be tricky)