diff --git a/README.md b/README.md
index 5959254..86d9078 100644
--- a/README.md
+++ b/README.md
@@ -1,27 +1,27 @@
 ## todo list :
 
-- [ ] **builtins**
-  - [ ] echo
-- [ ] [builtins] echo -n
-- [ ] [builtins] cd <relative path>
-- [ ] [builtins] cd <absolute path>
-- [ ] [builtins] pwd
-- [ ] [builtins] export
-- [ ] [builtins] unset
-- [ ] [builtins] env
-- [ ] [builtins] exit
-- [ ] ' _ignore any special characters_ [ressource](https://linuxhandbook.com/quotes-in-bash/)
-- [ ] " _ignore any special characters except '$'_
-- [ ] 
-- [ ] 
-- [ ] 
-- [ ] 
-- [ ] 
-- [ ] 
-- [ ] 
-- [ ] 
-- [ ] 
-- [ ] 
+- **builtins**
+  - echo
+- [builtins] echo -n
+- [builtins] cd <relative path>
+- [builtins] cd <absolute path>
+- [builtins] pwd
+- [builtins] export
+- [builtins] unset
+- [builtins] env
+- [builtins] exit
+- ' _ignore any special characters_ [ressource](https://linuxhandbook.com/quotes-in-bash/){:target="_blank"}
+- " _ignore any special characters except '$'_
+- 
+- 
+- 
+- 
+- 
+- 
+- 
+- 
+- 
+- 
 
 ---