diff --git a/sources/tech/20120424 How To Set Readonly File Permissions On Linux - Unix Web Server DocumentRoot.md b/sources/tech/20120424 How To Set Readonly File Permissions On Linux - Unix Web Server DocumentRoot.md
index 6f46d154a1..d5b31e5120 100644
--- a/sources/tech/20120424 How To Set Readonly File Permissions On Linux - Unix Web Server DocumentRoot.md	
+++ b/sources/tech/20120424 How To Set Readonly File Permissions On Linux - Unix Web Server DocumentRoot.md	
@@ -1,3 +1,5 @@
+translating by yizhuoyan
+
 How To Set Readonly File Permissions On Linux / Unix Web Server DocumentRoot
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