diff --git a/tutorials/incompressible/adjointOptimisationFoam/sensitivityMaps/sbend/laminar/Allclean b/tutorials/incompressible/adjointOptimisationFoam/sensitivityMaps/sbend/laminar/Allclean
index 61816694dbef9df2eaf1ea8d1db954de1f9ca17a..52a7c1663cb2b24deb8c17dc4d1e58bee3a6242e 100755
--- a/tutorials/incompressible/adjointOptimisationFoam/sensitivityMaps/sbend/laminar/Allclean
+++ b/tutorials/incompressible/adjointOptimisationFoam/sensitivityMaps/sbend/laminar/Allclean
@@ -4,5 +4,7 @@ cd "${0%/*}" || exit                                # Run from this directory
 #------------------------------------------------------------------------------
 
 cleanCase
-rm 0/*.gz
+
+rm -f 0/*.gz
+
 #------------------------------------------------------------------------------
diff --git a/tutorials/incompressible/pimpleFoam/laminar/contactAngleCavity/Allclean b/tutorials/incompressible/pimpleFoam/laminar/contactAngleCavity/Allclean
index 43b1e567b1d6c68e3541af1e54add0ebe5376bae..a7e5dc4a81308c4184cd31028db45c8524aecc05 100755
--- a/tutorials/incompressible/pimpleFoam/laminar/contactAngleCavity/Allclean
+++ b/tutorials/incompressible/pimpleFoam/laminar/contactAngleCavity/Allclean
@@ -1,5 +1,5 @@
 #!/bin/sh
-cd ${0%/*} || exit                                  # Run from this directory
+cd "${0%/*}" || exit                                # Run from this directory
 . ${WM_PROJECT_DIR:?}/bin/tools/CleanFunctions      # Tutorial clean functions
 #------------------------------------------------------------------------------
 
diff --git a/tutorials/incompressible/pimpleFoam/laminar/mixerVesselAMI2D/mixerVesselAMI2D-topologyChange/Allrun b/tutorials/incompressible/pimpleFoam/laminar/mixerVesselAMI2D/mixerVesselAMI2D-topologyChange/Allrun
index 0cae8060837435fc29bd1cbe44a43efc2492511d..3aaff9382e8d89f74654626bd751674bb48674f2 100755
--- a/tutorials/incompressible/pimpleFoam/laminar/mixerVesselAMI2D/mixerVesselAMI2D-topologyChange/Allrun
+++ b/tutorials/incompressible/pimpleFoam/laminar/mixerVesselAMI2D/mixerVesselAMI2D-topologyChange/Allrun
@@ -1,6 +1,7 @@
 #!/bin/sh
-cd ${0%/*} || exit 1                        # Run from this directory
-. $WM_PROJECT_DIR/bin/tools/RunFunctions    # Tutorial run functions
+cd "${0%/*}" || exit                                # Run from this directory
+. ${WM_PROJECT_DIR:?}/bin/tools/RunFunctions        # Tutorial run functions
+#------------------------------------------------------------------------------
 
 ./makeMesh
 
diff --git a/tutorials/incompressible/pimpleFoam/laminar/mixerVesselAMI2D/mixerVesselAMI2D-topologyChange/makeMesh b/tutorials/incompressible/pimpleFoam/laminar/mixerVesselAMI2D/mixerVesselAMI2D-topologyChange/makeMesh
index fc56e7be3ced8dddd0d2158adb4b74e5e2d96239..5a991c3d4f85394a41b97e83832bb327433042a2 100755
--- a/tutorials/incompressible/pimpleFoam/laminar/mixerVesselAMI2D/mixerVesselAMI2D-topologyChange/makeMesh
+++ b/tutorials/incompressible/pimpleFoam/laminar/mixerVesselAMI2D/mixerVesselAMI2D-topologyChange/makeMesh
@@ -1,6 +1,7 @@
 #!/bin/sh
-cd ${0%/*} || exit 1                        # Run from this directory
-. $WM_PROJECT_DIR/bin/tools/RunFunctions    # Tutorial run functions
+cd "${0%/*}" || exit                                # Run from this directory
+. ${WM_PROJECT_DIR:?}/bin/tools/RunFunctions        # Tutorial run functions
+#------------------------------------------------------------------------------
 
 m4 < system/blockMeshDict.m4 > system/blockMeshDict
 
diff --git a/tutorials/mesh/refineMesh/refineFieldDirs/Allrun b/tutorials/mesh/refineMesh/refineFieldDirs/Allrun
index 7909fb899c58e546e695d7cb0e4c7246329d5a37..ca48dae90a01af42ec2e0b7a34351fa483020600 100755
--- a/tutorials/mesh/refineMesh/refineFieldDirs/Allrun
+++ b/tutorials/mesh/refineMesh/refineFieldDirs/Allrun
@@ -14,45 +14,45 @@ wclean calcRadiusField
 
 runApplication blockMesh
 
-##### Procedure for special refinement over Z
-
 # We need the 0 folder to exist for these steps
 mkdir 0
 
 # Refine over Z, in 6 passes
 for index in 1 2 3 4 5 6
 do
+    suffix="tier$index"
 
-  runApplication -s tier$index  calcRadiusField
-
-  runApplication -s tier$index \
-      topoSet -dict system/topoSetDict.tier$index
+    runApplication -s "$suffix" calcRadiusField
 
-  ## foamToVTK -cellSet tier$index
+    runApplication -s "$suffix" \
+        topoSet -dict system/topoSetDict.tier$index
 
-  runApplication -s tier$index \
-      refineMesh -dict system/refineMeshDict.tier$index -overwrite
+    ## foamToVTK -cellSet "$suffix"
 
-  rm -r 0/*
+    runApplication -s "$suffix" \
+        refineMesh -dict system/refineMeshDict."$suffix" -overwrite
 
+    rm -r 0/*
 done
 
 # Refine over cylindrical coordinates, in 3 passes
 for index in 1 2 3
 do
+    suffix="range$index"
 
-  runApplication -s range$index  calcRadiusField -calcDirections
+    runApplication -s "$suffix" calcRadiusField -calcDirections
 
-  runApplication -s range$index \
-      topoSet -dict system/topoSetDict.range$index
+    runApplication -s "$suffix" \
+        topoSet -dict system/topoSetDict."$suffix"
 
-  ## foamToVTK -cellSet tier$index
+    ## foamToVTK -cellSet "$suffix"
 
-  runApplication -s range$index \
-      refineMesh -dict system/refineMeshDict.range$index -overwrite
-
-  rm -r 0/*
+    runApplication -s "$suffix" \
+        refineMesh -dict system/refineMeshDict."$suffix" -overwrite
 
+    rm -r 0/*
 done
 
+rmdir 0 2>/dev/null
+
 #------------------------------------------------------------------------------
diff --git a/tutorials/multiphase/compressibleInterDyMFoam/laminar/sloshingTank2D/Allclean b/tutorials/multiphase/compressibleInterDyMFoam/laminar/sloshingTank2D/Allclean
index 8dfb6f7ba605d80e0dcd37c18285eb5abf2dfe71..fb1f3847301c377e02e12439ba58cbf303af3ef9 100755
--- a/tutorials/multiphase/compressibleInterDyMFoam/laminar/sloshingTank2D/Allclean
+++ b/tutorials/multiphase/compressibleInterDyMFoam/laminar/sloshingTank2D/Allclean
@@ -1,5 +1,6 @@
 #!/bin/sh
 cd "${0%/*}" || exit                                # Run from this directory
+. ${WM_PROJECT_DIR:?}/bin/tools/CleanFunctions      # Tutorial clean functions
 #------------------------------------------------------------------------------
 
 cleanCase0
diff --git a/tutorials/multiphase/compressibleInterIsoFoam/laminar/depthCharge2D/Allclean b/tutorials/multiphase/compressibleInterIsoFoam/laminar/depthCharge2D/Allclean
index 188f107b0e907b47bebd868d842a1853f587802a..faeb44ab7530e02c7248ff50be7fab36f8b37852 100755
--- a/tutorials/multiphase/compressibleInterIsoFoam/laminar/depthCharge2D/Allclean
+++ b/tutorials/multiphase/compressibleInterIsoFoam/laminar/depthCharge2D/Allclean
@@ -1,8 +1,10 @@
 #!/bin/sh
-cd ${0%/*} || exit 1                        # Run from this directory
-. $WM_PROJECT_DIR/bin/tools/CleanFunctions  # Tutorial clean functions
+cd "${0%/*}" || exit                                # Run from this directory
+. ${WM_PROJECT_DIR:?}/bin/tools/CleanFunctions      # Tutorial clean functions
+#------------------------------------------------------------------------------
 
 cleanCase0
-rm -r sequencedVTK
+
+rm -rf sequencedVTK
 
 #------------------------------------------------------------------------------
diff --git a/tutorials/multiphase/compressibleInterIsoFoam/laminar/depthCharge2D/Allrun b/tutorials/multiphase/compressibleInterIsoFoam/laminar/depthCharge2D/Allrun
index 98b1a954b1962b7c9b8b87946d83b23f1ccaf5cb..30fed9690edc74843640ca740ea3b4552996bcc0 100755
--- a/tutorials/multiphase/compressibleInterIsoFoam/laminar/depthCharge2D/Allrun
+++ b/tutorials/multiphase/compressibleInterIsoFoam/laminar/depthCharge2D/Allrun
@@ -1,6 +1,7 @@
 #!/bin/sh
-cd ${0%/*} || exit 1                        # Run from this directory
-. $WM_PROJECT_DIR/bin/tools/RunFunctions    # Tutorial run functions
+cd "${0%/*}" || exit                                # Run from this directory
+. ${WM_PROJECT_DIR:?}/bin/tools/RunFunctions        # Tutorial run functions
+#------------------------------------------------------------------------------
 
 runApplication blockMesh
 restore0Dir
diff --git a/tutorials/multiphase/compressibleInterIsoFoam/laminar/depthCharge3D/Allclean b/tutorials/multiphase/compressibleInterIsoFoam/laminar/depthCharge3D/Allclean
index 3b8c6e8e2fb2b80437330845ebe5002ef787f4b3..a3ef4042a2c651541bbbcbe38d29d15c703f41b5 100755
--- a/tutorials/multiphase/compressibleInterIsoFoam/laminar/depthCharge3D/Allclean
+++ b/tutorials/multiphase/compressibleInterIsoFoam/laminar/depthCharge3D/Allclean
@@ -1,8 +1,10 @@
 #!/bin/sh
-cd ${0%/*} || exit 1                        # Run from this directory
-. $WM_PROJECT_DIR/bin/tools/CleanFunctions  # Tutorial clean functions
+cd "${0%/*}" || exit                                # Run from this directory
+. ${WM_PROJECT_DIR:?}/bin/tools/CleanFunctions      # Tutorial clean functions
+#------------------------------------------------------------------------------
 
 cleanCase0
+
 rm -rf processor*
 
 #------------------------------------------------------------------------------
diff --git a/tutorials/multiphase/compressibleInterIsoFoam/laminar/depthCharge3D/Allrun b/tutorials/multiphase/compressibleInterIsoFoam/laminar/depthCharge3D/Allrun
index bdb96428fab4a09fe5434006ac2651a46362525a..02b2d981f376706913ce5194fbaa0bf40fd76c08 100755
--- a/tutorials/multiphase/compressibleInterIsoFoam/laminar/depthCharge3D/Allrun
+++ b/tutorials/multiphase/compressibleInterIsoFoam/laminar/depthCharge3D/Allrun
@@ -1,6 +1,7 @@
 #!/bin/sh
-cd ${0%/*} || exit 1                        # Run from this directory
-. $WM_PROJECT_DIR/bin/tools/RunFunctions    # Tutorial run functions
+cd "${0%/*}" || exit                                # Run from this directory
+. ${WM_PROJECT_DIR:?}/bin/tools/RunFunctions        # Tutorial run functions
+#------------------------------------------------------------------------------
 
 runApplication blockMesh
 restore0Dir