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Processes and Plumbing

Watch a program become another program, and watch a shell wire two programs together. fork and exec and wait, then pipes and dup2, all seen in a live trace.

Labs in this module

• Watching a Process Spawn - Follow a program as it becomes a second program: clone, execve, wait, and the reason fork shows up in a trace as clone.
• Pipes and Redirection Under the Hood - Trace a shell building a pipeline and a redirect, and watch pipe and dup2 wire one program's output into another's input.