I read your proposal (at least the version I downloaded at 9 may) and have a few remarks:
- The title includes “process management” (also the project objectives) but your proposal does not include anything of that kind. That is okay, but then that should be made clear in the text.
- It is not entirely clear to me what you mean by “expand_user” or “expand_var” - is that tilde expansion?
- What purpose has “getfd”?
- Some of the function/routine names you mention are a trifle too generic, or better, are not easily identified as dealing with file or the file system: link, exists, rename.
Just a few remarks 