diff --git a/linux b/linux
index 040fffe62168a21570dda6409f0e5490b86c48ba..da4bb643e17ea2a6ad8bca508036202846cd0f64 100644
--- a/linux
+++ b/linux
@@ -17,6 +17,9 @@
 14.
 15.
 
+https://www.guru99.com/linux-commands-cheat-sheet.html
+참고 링크 (linux command cheat sheet)
+
 ## Soft/Hard Link
 
 ### Link