diff --git a/tutorials/cfdemPostproc/fillCylinder/Allrun.sh b/tutorials/cfdemPostproc/fillCylinder/Allrun.sh
index 3ebdb7df..b8476329 100755
--- a/tutorials/cfdemPostproc/fillCylinder/Allrun.sh
+++ b/tutorials/cfdemPostproc/fillCylinder/Allrun.sh
@@ -97,4 +97,4 @@ rm -r $casePath/DEM/log.*
 echo "done"
 
 #- preserve post directory
-echo "dummyfile" >> $casePath/DEM/post/dummy
+touch $casePath/DEM/post/.gitignore
diff --git a/tutorials/cfdemPostproc/fillCylinder/DEM/post/.gitignore b/tutorials/cfdemPostproc/fillCylinder/DEM/post/.gitignore
new file mode 100644
index 00000000..e69de29b