$ mzscheme -if as.scm
Welcome to MzScheme v4.2.1 [3m], Copyright (c) 2004-2009 PLT Scheme Inc.
Use (quit) to quit, (tl) to return here after an interrupt.
$ cat somefile | somearcprogram
How would I get that working?
You may be interested by this thread: http://arclanguage.org/item?id=10344 - "Arc usable on Unix (include ability to run scripts!)"