diff --git a/.zsh/40_function.zsh b/.zsh/40_function.zsh
index 7a09a16..291c326 100755
--- a/.zsh/40_function.zsh
+++ b/.zsh/40_function.zsh
@@ -152,6 +152,10 @@ docgrep () {
     find . -name .repo -prune -o -name .git -prune -o -type f \( -name '*.doc' -o -name '*.docx' -o -name '*.pdf' -o -name '*.odt'  \) -print0 | xargs -i -0 docgrepfile {} "$@"
 }
 
+findduplicate ()
+{
+    find . -name .repo -prune -o -name .git -prune -o -not -empty -type f -printf "%s\n" | sort -rn | uniq -d | xargs -I{} -n1 find -type f -size {}c -print0 | xargs -0 md5sum | sort | uniq -w32 --all-repeated=separate
+}
 
 gettop ()
 {