diff --git a/files/fastdu b/files/fastdu
index 7c2beef..31d24bc 100755
--- a/files/fastdu
+++ b/files/fastdu
@@ -6,6 +6,7 @@ function helpexit() {
     echo "  -h       Human readable units"
     echo "  -s       Summary mode, otherwise each argument folder calculated separate"
     echo "  -c       Count files instead of summarizing sizes"
+    echo "  -a       Display animation while counting"
     echo "  --help   This help"
     exit
 }
@@ -45,6 +46,15 @@ function siprefix() {
     }' || return $?
 }
 
+function animate() {
+  CHARS="|/-__-\\"
+  i=0
+  while true; do
+    sleep 0.2
+    printf "\r%s\r" ${CHARS:$i:1} >&2
+    i=$(( (i + 1)%${#CHARS} ))
+  done
+}
 
 function processfolder() {
    if [[ "$COUNT" -eq 1 ]]; then
@@ -77,12 +87,17 @@ for (( i=1; i<=$#; i++ )); do
   [[ "${!i}" = "-h" ]] && { HUMAN=1; continue; }
   [[ "${!i}" = "-c" ]] && { COUNT=1; continue; }
   [[ "${!i}" = "-s" ]] && { SUMMARY=1; continue; }
+  [[ "${!i}" = "-a" ]] && { ANIMATE=1; continue; }
   what+=( "${!i}" )
 done
 [[ -z "${what[@]}" ]] && what="."
 # If only one entry, dont print the name
 [[ "${#what[@]}" -eq 1 ]] && SUMMARY=1
 
+if [[ "$ANIMATE" -eq 1 ]]; then
+  animate &
+fi
+
 if [[ "$SUMMARY" -eq 1 ]]; then
   # Display one line
   processfolder "${what[@]}"
@@ -97,4 +112,7 @@ else
     printf "$FORMAT" "$( processfolder "$dir" )" "$dir"
   done
 fi
+if [[ "$ANIMATE" -eq 1 ]]; then
+  kill %1
+fi