diff --git a/sources/tech/20160810 How does gdb work.md b/sources/tech/20160810 How does gdb work.md
index 4159f1c65a..56b0cfe7bf 100644
--- a/sources/tech/20160810 How does gdb work.md	
+++ b/sources/tech/20160810 How does gdb work.md	
@@ -1,3 +1,5 @@
+translating by ucasFL
+
 How does gdb work?
 ============================================================
 
diff --git a/sources/tech/20171219 How to generate webpages using CGI scripts.md b/sources/tech/20171219 How to generate webpages using CGI scripts.md
index b452cdee84..76c3ce6558 100644
--- a/sources/tech/20171219 How to generate webpages using CGI scripts.md	
+++ b/sources/tech/20171219 How to generate webpages using CGI scripts.md	
@@ -1,3 +1,5 @@
+translating by ucasFL
+
 How to generate webpages using CGI scripts
 ======
 Back in the stone age of the Internet when I first created my first business website, life was good.
diff --git a/sources/tech/20180104 How does gdb call functions.md b/sources/tech/20180104 How does gdb call functions.md
index a62b30ea31..c88fae999e 100644
--- a/sources/tech/20180104 How does gdb call functions.md	
+++ b/sources/tech/20180104 How does gdb call functions.md	
@@ -1,3 +1,5 @@
+translating by ucasFL
+
 How does gdb call functions?
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diff --git a/sources/tech/20180123 Linux mkdir Command Explained for Beginners (with examples).md b/sources/tech/20180123 Linux mkdir Command Explained for Beginners (with examples).md
index a437b20395..591919ce9d 100644
--- a/sources/tech/20180123 Linux mkdir Command Explained for Beginners (with examples).md	
+++ b/sources/tech/20180123 Linux mkdir Command Explained for Beginners (with examples).md	
@@ -1,3 +1,5 @@
+translating by ucasFL
+
 Linux mkdir Command Explained for Beginners (with examples)
 ======