confirm working on ubuntu
diff --git a/.Rproj.user/441ADA46/console06/INDEX001 b/.Rproj.user/441ADA46/console06/INDEX001
new file mode 100644
index 0000000..0637a08
--- /dev/null
+++ b/.Rproj.user/441ADA46/console06/INDEX001
@@ -0,0 +1 @@
+[]
\ No newline at end of file