diff --git a/README.md b/ERA.md
similarity index 99%
rename from README.md
rename to ERA.md
index 7324ca297..4e3e69b31 100644
--- a/README.md
+++ b/ERA.md
@@ -1,4 +1,5 @@
 # Unix shell
+I want to add more descriptions about this file.
 
 ## Content