I don't see much sh influence though.

I can see many, though, and in addition to those pointed out by others it seems to me that sigils, which are by now so charachteristic (also) of Perl, have not been mentioned yet. But maybe they're inherited from something else - I'm not a language historian after all... oh and while we're at it, maybe it's worth reminding that their syntax is somewhat different in sh's, as they (limitedly) declinate there, as they do in tcl (IIRC).