diff --git a/files/fastdu b/files/fastdu
index c3546b9..b7c4807 100755
--- a/files/fastdu
+++ b/files/fastdu
@@ -8,7 +8,7 @@ function helpexit() {
     echo "  --help   This help"
     exit
 }
-function filesize {
+function filesize() {
 # Return a human readable size from integer of bytes
 # Usage:  filesize 10000
 
@@ -18,7 +18,7 @@ function filesize {
     }
 
     awk 'BEGIN{ x = '$1'
-        split("B KB MB GB TB PB EB ZB",type)
+        split("B kB MB GB TB PB EB ZB",type)
         for(i=7;y < 1;i--)
             y = x / (2^(10*i))
         str=int(y*10)/10 " " type[i+2] 
@@ -26,6 +26,41 @@ function filesize {
         print str
     }' || return $?
 }
+function siprefix() {
+# Return a SI prefixed string from integer
+
+    [ "$1"  = "0" ] && {
+        echo "0"
+        return 0
+    }
+
+    awk 'BEGIN{ x = '$1'
+        split("_ k M G T P E Z",type)
+        for(i=7;y < 1;i--)
+            y = x / (10^(3*i))
+        str=int(y*10)/10 " " type[i+2] 
+        if (x==0) { str = "0" }
+        if (i==-1) { str = x }
+        print str
+    }' || return $?
+}
+
+
+function processfolder() {
+   if [[ "$COUNT" -eq 1 ]]; then
+     countfiles "$@"
+   else
+     displaysize "$@" 
+   fi
+}
+
+function countfiles() {
+  SIZE=$( find "$@" -type f -printf %s"\n" | awk '{  sum += 1 } END { print int(sum)+0 }' )
+  [[ "$HUMAN" -eq 1 ]] && {
+    SIZE=$( siprefix "$SIZE" )
+  }
+  echo "${SIZE}"
+}
 
 function displaysize() {
   SIZE=$( find "$@" -type f -printf %s"\n" | awk '{  sum += $1 } END { print int(sum)+0 }' )
@@ -40,6 +75,7 @@ what=()
 for (( i=1; i<=$#; i++ )); do
   [[ "${!i}" = "--help" ]] && helpexit                                            
   [[ "${!i}" = "-h" ]] && { HUMAN=1; continue; }
+  [[ "${!i}" = "-c" ]] && { COUNT=1; continue; }
   [[ "${!i}" = "-s" ]] && { SUMMARY=1; continue; }
   what+=( "${!i}" )
 done                       
@@ -49,11 +85,11 @@ done
 
 if [[ "$SUMMARY" -eq 1 ]]; then
   # Display one line
-  displaysize "${what[@]}"
+  processfolder "${what[@]}"
 else
   # One size for each argument
   for dir in "${what[@]}"; do
-    printf "%s\t%s\n" "$( displaysize "$dir" )" "$dir"
+    printf "%s\t%s\n" "$( processfolder "$dir" )" "$dir"
   done
 fi