Re: [BProc] bpsh, scripts and $0

[<er...@he...>]

On Mon, Feb 23, 2004 at 01:24:44PM -0800, Dale Harris wrote:
> On Mon, Feb 23, 2004 at 09:22:47AM -0700, er...@he... elucidated:
> > 
> > Hehe.  You've discovered the wacky shell script hack that I put in a
> > while ago.  The problem with shell scripts is that then the kernel
> > sees '#!/bin/sh' in a script called X it actually does
> > execve("/bin/sh", "X", 0).  X isn't going to exist on the nodes most
> > of the time.  This is true in my world anyway.  BProc, in an attempt
> > to be tricky and get around this, puts the script in the process's
> > memory space and then gives you this file descriptor on fd 3 that
> > magically just reads the file from your own memory space.  This made a
> > few perl users very happy a while ago.
> > 
> 
> I wonder if that is what was getting in the way of PVM on 4.0?  That was
> the file it would complain about.  

Hrm.  Could be....  Most of those things (PVM, MPI, etc.) tend to be
very script-centric...

- Erik