Re: Re: execlp() and binary files (was: Austin Group Status February 2006)

[Larry Dwyer <yyyyyyyyyyy@xxxxxx>]

At 06:15 PM 3/6/2006, Garrett Wollman wrote:
> <<On Mon, 06 Mar 2006 16:27:19 -0800, Larry Dwyer <yyyyyyyyyyy@xxxxxx> said:
>
> > . . . And for years we have been hearing from customers:
>
> >          Solaris has its UNIX commands in /usr/bin/xpg4, how come HP-UX
> >          doesn't have its UNIX commands in /usr/bin/xpg4?
>
> In other words:
>
>         "I got this executable from a Solaris system, how come HP-UX
>         can't execute it?"
>
> I don't see the problem here.  Clearly, your customers have an
> erroneous expectation of binary portability; that's not a problem for
> POSIX to solve.
You missed my point.  The "#! /x/y/z" convention only works if all systems 
have the same file layout.  Since some systems put "z" in /x/y and others 
put it in /a/b, there is no portable script that can utilized the "#!" 
convention.

David Korn pointed this out and I am reinforcing his assertion with my 
observation that the file layout difference is a common customer complaint.

                Cheers,
                Larry


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