Determine function and file dependency of a shell script?

Question

I'm looking for a way of processing a shell script to determine:

1. which commands, scripts or functions are called in the script.
2. which files are accessed by the script (r or w) .

It doesn't need to recurse down through the dependencies, just list what it runs directly. I could probably write something that does this myself but it must have been done before ... I'm just not finding it.

Answer 1

It will be a feature of the Loker project which I currently develop. For now, the parser is almost complete and you may implement a reasonable approximation of what you want on top of it. However, in general this task is very complex, because the name of the command may result from variable expansion, field splitting etc.

If you describe what do you need this for and what kind of scripts are you going to parse I will be able to say how much of your needs Loker can satisfy by now.

As alternative option, some versions of bash have --rpm-requires option, which also does something similar.