Back to Course Investigative Debugging 0% Complete 0/0 Steps Investigative Debugging 6 Topics lsof; or: what process is using my port?! Strace Magic Subshell ltrace Docker Diff mitmproxy Conclusion and Next Steps Search (Entire Site)Search Investigative Debugging Investigative Debugging Magic Subshell Module 1, Topic 3 In Progress ← Previous Next→ Magic Subshell Module Progress 0% Complete Today we dive into some surprising behavior when executing shell commands from Ruby. Oop, this content isn't available to visitors. Please register or log in to continue! Responses You must be logged in to post a comment.