Examples: Python Index
. ./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
