rbtrace

https://github.com/tmm1/rbtrace

Find Ruby Process

On Unix systems:

$ ps aux

or in Ruby:

> Process.pid

See what’s going on

$ rbtrace -p 12345 --firehose

Trace method

$ rbtrace -p 12345 -m sleep Dir.chdir

Trace all in a class/module

$ rbtrace -p 12345 -m Kernel#

Return backtraces

$ rbtrace -p 12345 --backtraces

IRB session

$ rbtrace -p 12345 --interactive

Use eval

$ rbtrace --pid 12345 -e 'puts Rails.env'