From a7280e2069264b7ed574b98ba46e6cf19d7114cc Mon Sep 17 00:00:00 2001
From: Shahram Najm <masn@ecmwf.int>
Date: Mon, 23 Jan 2017 11:14:40 +0000
Subject: [PATCH] Examples: Python Index

---
 examples/python/grib_index.sh | 20 ++++++++++++++++++--
 1 file changed, 18 insertions(+), 2 deletions(-)

diff --git a/examples/python/grib_index.sh b/examples/python/grib_index.sh
index 110dde63f..962d7e62a 100755
--- a/examples/python/grib_index.sh
+++ b/examples/python/grib_index.sh
@@ -2,5 +2,21 @@
 
 . ./include.sh
 
-$PYTHON $examples_src/grib_index.py
-rm -f my.idx
+TEMP1=temp1.grib_index.py.txt
+TEMP2=temp2.grib_index.py.txt
+
+IDX_FILE=my.idx
+rm -f $IDX_FILE
+
+# First time it will create the index file
+$PYTHON $examples_src/grib_index.py > $TEMP1
+
+[ -f "$IDX_FILE" ]
+
+# Second time it will use the file created before
+$PYTHON $examples_src/grib_index.py > $TEMP2
+
+# Check output in both cases is the same
+diff $TEMP1 $TEMP2
+
+rm -f $IDX_FILE $TEMP1 $TEMP2