Jenkins console output not in realtime

Question

Pretty new to Jenkins and I have simple yet annoying problem. When I run job (Build) on Jenkins I am triggering ruby command to execute my test script.

Problem is Je

Answer 1

The Operating-System is buffering output-data by nature, to save CPU, and so does Jenkins.

Looks like you are using a shell-command to run your Ruby script -
I suggest running your Ruby script directly via the dedicated plugin:

Jenkins Ruby Plugin

(may need to install it)