diff --git a/sources/tech/20150813 Linux and Unix Test Disk I O Performance With dd Command.md b/sources/tech/20150813 Linux and Unix Test Disk I O Performance With dd Command.md
index c30619d13e..bcd9f8455f 100644
--- a/sources/tech/20150813 Linux and Unix Test Disk I O Performance With dd Command.md	
+++ b/sources/tech/20150813 Linux and Unix Test Disk I O Performance With dd Command.md	
@@ -1,3 +1,5 @@
+DongShuaike is translating.
+
 Linux and Unix Test Disk I/O Performance With dd Command
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 How can I use dd command on a Linux to test I/O performance of my hard disk drive? How do I check the performance of a hard drive including the read and write speed on a Linux operating systems?
@@ -159,4 +161,4 @@ via: http://www.cyberciti.biz/faq/howto-linux-unix-test-disk-performance-with-dd
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+本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创翻译，[Linux中国](https://linux.cn/) 荣誉推出