print ruby code during execution [duplicate]

Question

This question already has an answer here:

How to track the execution process of ruby program (1 answer)

Closed 9 years ago.

Does Ruby have the ability to print out each line of code as it executes during runtime? I'm looking for something similar to Bash's set -x functionality.

Preferably the solution would be something using only the Ruby standard-lib. This would be used in a continuous-integration system so I don't have much control over installed gems.

Thank you in advance

Answer 1

As pointed out by Arup, this is a dupe.

Ruby's Tracer class fits my needs.