diff --git a/sources/tech/20180615 Complete Sed Command Guide [Explained with Practical Examples].md b/sources/tech/20180615 Complete Sed Command Guide [Explained with Practical Examples].md
index e548213483..a1d721ae3c 100644
--- a/sources/tech/20180615 Complete Sed Command Guide [Explained with Practical Examples].md	
+++ b/sources/tech/20180615 Complete Sed Command Guide [Explained with Practical Examples].md	
@@ -1,3 +1,4 @@
+translating by amwps290
 Complete Sed Command Guide [Explained with Practical Examples]
 ======
 In a previous article, I showed the [basic usage of Sed][1], the stream editor, on a practical use case. Today, be prepared to gain more insight about Sed as we will take an in-depth tour of the sed execution model. This will be also an opportunity to make an exhaustive review of all Sed commands and to dive into their details and subtleties. So, if you are ready, launch a terminal, [download the test files][2] and sit comfortably before your keyboard: we will start our exploration right now!