On Mar 4, 2004, at 8:33 PM, nobu.nokada / softhome.net wrote:

> Hi,
>
> At Fri, 5 Mar 2004 09:44:55 +0900,
> Robert Peirce wrote in [ruby-talk:94276]:
>> $ hello
>> : No such file or directory
>
> I vote line ending code issue.
>
> -- 
> Nobu Nakada

That was it!!  Hello came from a Windows machine where lines end in 
\n\r.  I was trying to run it on a Unix machine where lines end in \n.
I ran 'cat hello | tr -d '\r' > tst8', made tst8 executable and it ran. 
  Thanks.

Apparently, ruby itself ignores this, which is why 'ruby hello' worked.