Conditional Post-Build step in Jenkins (Ideally without plugins)

Question

If I understand correctly I can make a build step conditional using this plugin: https://wiki.jenkins-ci.org/display/JENKINS/Conditional+BuildStep+Plugin

First does thi

Answer 1

You can make any Build step execute as Post-build step.

• Install Flexible Publish plugin
• Install Any Build Step plugin
• Under Configure System, look for "Flexible publish", and choose Any build step from drop-down.

The configure Job.

• In your Job configuration, add Post-build action called "Flexible Publish".
• Select condition.
• Select action.