(none)

[Guy Harris]

>Only BSD-based systems understand the #! hack.

For suitable values of "BSD-based".  Now, *I'd* certainly call System V
Release 4 "BSD-based" (no smiley - it's not based *only*, or probably
even *primarily*, on BSD, but it is, in part, based on BSD), but not
everybody would, and it *does* support "#!".  Other systems that might
be considered S5-based by some also have had "#!" support added to them.