[MITgcm-devel] Symbolic linked _mpi

[Alistair Adcroft]

Ok - lesson re-learned. I did miss the ==.

A.
--
Dr Alistair Adcroft            http://www.mit.edu/~adcroft
MIT Climate Modeling Initiative        tel: (617) 253-5938
EAPS 54-1523,  77 Massachusetts Ave,  Cambridge,  MA,  USA

-----Original Message-----
From: mitgcm-devel-bounces at mitgcm.org
[mailto:mitgcm-devel-bounces at mitgcm.org] On Behalf Of Ed Hill
Sent: Friday, December 05, 2003 1:00 PM
To: MITgcm-devel
Subject: RE: [MITgcm-devel] Symbolic linked _mpi



Hi Alistair,

OK, you got me, I certainly forgot to check that $MPI was enabled.  My
mistake.
 
But you missed one of the finer points of my earlier emails.  The syntax to
use is:

  test "x$foo" = "x$bar"

not

  test "x$foo" == "x$bar"

You'll notice that the latter is not mentioned if you do a "man test" and
the "==" is actually non-portable.  It works on the Linux boxes and fails on
most of the commercial Unixes.  And if you don't believe me, just try:

   test a == a && echo hi

on one of the Linux machines and then try it using the Bourne shell on one
of the IBM SP3/4's where you'll get:

  $ test a == a && echo hi
  sh: ==: 0403-012 A test command parameter is not valid.

Ed

-- 
Edward H. Hill III, PhD
office:  MIT Dept. of EAPS;  Room 54-1424;  77 Massachusetts Ave.
            Cambridge, MA 02139-4307
email:   eh3 at mit.edu,  ed at eh3.com
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