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Is there any way to view the call hierarchy for a /bin/sh script? Something like this might be useful to understand general flow. And also to know whether a function is being used or not.
It would be better if you can explain the question little more. However, you can run your script by adding set -vx (v stands for verbose, x for execution) debugging tool, so you can see every step of running script. To do this, just add it as:
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