diff --git a/rc/functions.sh b/rc/functions.sh
index bf0c52b..4569f1e 100644
--- a/rc/functions.sh
+++ b/rc/functions.sh
@@ -9,3 +9,7 @@ function ffile() {
   file $(type -p "$filename") $@
 }
 
+# print time in seconds with nanoseconds precission
+function utime() {
+  date '+%s.%N'
+}