From 53e0ec7101036910c041a19a6dda4220c2cb03fd Mon Sep 17 00:00:00 2001
From: william <william>
Date: Thu, 13 Feb 2014 11:24:34 +0000
Subject: [PATCH] BUG: making patchifyObstacles script POSIX compliant

---
 .../reactingParcelFilmFoam/hotBoxes/patchifyObstacles           | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tutorials/lagrangian/reactingParcelFilmFoam/hotBoxes/patchifyObstacles b/tutorials/lagrangian/reactingParcelFilmFoam/hotBoxes/patchifyObstacles
index 812b1c232a..3139d52ccd 100755
--- a/tutorials/lagrangian/reactingParcelFilmFoam/hotBoxes/patchifyObstacles
+++ b/tutorials/lagrangian/reactingParcelFilmFoam/hotBoxes/patchifyObstacles
@@ -135,7 +135,7 @@ for xi in $(seq 1 1 $nx); do
            z2=`echo $z $l $tol | awk '{print $1 + $2 + $3}'`
            addToFaceSet cube${pad}${n}_side${side} $x1 $x2 $y1 $y2 $z1 $z2
 
-           let n+=1
+           n=$((n+1))
 
            z=`echo $z $offset | awk '{print $1 + $2}'`
        done