diff --git a/bin/foamUpdateCaseFileHeader b/bin/foamUpdateCaseFileHeader
index 6b7aa8439ff85426d5aa82012978712ee8b0583e..805f4e128a72d215cf0eebc67d7477e4fe75b87a 100755
--- a/bin/foamUpdateCaseFileHeader
+++ b/bin/foamUpdateCaseFileHeader
@@ -121,17 +121,18 @@ do
    if grep FoamFile $caseFile >/dev/null 2>&1
    then
       echo "Updating case file: $caseFile"
-      sed -n '/FoamFile/,/}/p' $caseFile > FoamFile
+      sed -n '/FoamFile/,/}/p' $caseFile > FoamFile.tmp
 
-      CLASS=`FoamFileAttribute class FoamFile`
-      OBJECT=`FoamFileAttribute object FoamFile`
-      FORMAT=`FoamFileAttribute format FoamFile`
+      CLASS=`FoamFileAttribute class FoamFile.tmp`
+      OBJECT=`FoamFileAttribute object FoamFile.tmp`
+      FORMAT=`FoamFileAttribute format FoamFile.tmp`
 
       printHeader $FORMAT $CLASS $OBJECT $NOTE > FoamFile.tmp
       sed '1,/}/d' $caseFile | sed '/./,/^$/!d' >> FoamFile.tmp
 
-      mv FoamFile.tmp $caseFile
-      rm FoamFile
+      # use cat to avoid removing/replace soft-links
+      [ -s FoamFile.tmp ] && cat FoamFile.tmp >| $caseFile
+      rm FoamFile.tmp
    else
       echo " Invalid case file: $caseFile"
    fi
diff --git a/bin/foamUpgradeTurbulenceProperties b/bin/foamUpgradeTurbulenceProperties
index 8c1437aca6675224f53814c0e7cb2326e1c4e6c6..297b7e4e63567f6dc3cd6d1d817ce4e839292e3b 100755
--- a/bin/foamUpgradeTurbulenceProperties
+++ b/bin/foamUpgradeTurbulenceProperties
@@ -57,15 +57,20 @@ USAGE
 #
 convertDict()
 {
-    echo "Identified $1 turbulence model in '$3'"
-    outputPath=`dirname $3`
+   echo "Identified $1 turbulence model in '$3'"
+   outputPath=`dirname $3`
 
-    sed -e "s/turbulenceProperties/$1Properties/" \
-        -e "s/$2/$1Model/" \
-        -e "s/[a-zA-Z0-9]* [ ]*\[[0-9 ]*\]//" \
-        $3 > "$outputPath/$1Properties"
+   if [ -e "$outputPath/$1Properties" ]
+   then
+      echo "Error: file already exists $outputPath/$1Properties'"
+   else
+      sed -e "s/turbulenceProperties/$1Properties/" \
+          -e "s/$2/$1Model/" \
+          -e "s/[a-zA-Z0-9]* [ ]*\[[0-9 ]*\]//" \
+          $3 > "$outputPath/$1Properties"
 
-     echo "    wrote $outputPath/$1Properties"
+      echo "    wrote $outputPath/$1Properties"
+   fi
 }
 
 [ $# -ge 1 ] || usage
diff --git a/tutorials/interDyMFoam/sloshingTank3D/constant/polyMesh/blockMeshDict.m4 b/tutorials/interDyMFoam/sloshingTank3D/constant/polyMesh/blockMeshDict.m4
index cc851f6503f90da326a66561c0ccac74fb36f5dc..5e355fd7025a748a668cd3d55bfe9bd984c78869 100644
--- a/tutorials/interDyMFoam/sloshingTank3D/constant/polyMesh/blockMeshDict.m4
+++ b/tutorials/interDyMFoam/sloshingTank3D/constant/polyMesh/blockMeshDict.m4
@@ -16,7 +16,7 @@ FoamFile
 // General m4 macros
 
 changecom(//)changequote([,])
-define(calc, [esyscmd(perl -e 'use Math::Trig; use POSIX; print ($1)')])
+define(calc, [esyscmd(perl -e 'use Math::Trig; use POSIX; printf ($1)')])
 define(VCOUNT, 0)
 define(vlabel, [[// ]Vertex $1 = VCOUNT define($1, VCOUNT)define([VCOUNT], incr(VCOUNT))])