diff --git a/sources/tech/20170201 Prevent Files And Folders From Accidental Deletion Or Modification In Linux.md b/sources/tech/20170201 Prevent Files And Folders From Accidental Deletion Or Modification In Linux.md
index f8071c02bc..e2c00cbb75 100644
--- a/sources/tech/20170201 Prevent Files And Folders From Accidental Deletion Or Modification In Linux.md	
+++ b/sources/tech/20170201 Prevent Files And Folders From Accidental Deletion Or Modification In Linux.md	
@@ -1,3 +1,5 @@
+translating by yizhuoyan
+
 Prevent Files And Folders From Accidental Deletion Or Modification In Linux
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