How it could not do anything? It was previously working on Windows.

Like I said, its incomplete, its a fragment, many parts are missing , it is not self-contained , it doesn't compile, it doesn't run ...

$ perl abob
Unmatched right curly bracket at abob line 13, at end of line
syntax error at abob line 13, near "}"
Unmatched right curly bracket at abob line 14, at end of line
Execution of abob aborted due to compilation errors.

$ perl abob
No such file or directory at abob line 2.
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Do you understand ?