diff --git a/published/20190409 Four Methods To Add A User To Group In Linux.md b/published/20190409 Four Methods To Add A User To Group In Linux.md
index bb222efdae..96d54fd161 100644
--- a/published/20190409 Four Methods To Add A User To Group In Linux.md	
+++ b/published/20190409 Four Methods To Add A User To Group In Linux.md	
@@ -63,7 +63,7 @@ mygroup1:x:1013:
 
 #### 如何使用 usermod 命令将现有的用户添加到次要组或附加组？
 
-要将现有用户添加到辅助组，请使用带有 `-g` 选项和组名称的 `usermod` 命令。
+要将现有用户添加到辅助组，请使用带有 `-G` 选项和组名称的 `usermod` 命令。
 
 语法：
 
diff --git a/sources/tech/20180828 Linux for Beginners- Moving Things Around.md b/sources/tech/20180828 Linux for Beginners- Moving Things Around.md
index abefc7c6f5..013cd3a738 100644
--- a/sources/tech/20180828 Linux for Beginners- Moving Things Around.md	
+++ b/sources/tech/20180828 Linux for Beginners- Moving Things Around.md	
@@ -1,3 +1,4 @@
+warmfrog is translating
 Linux for Beginners: Moving Things Around
 ======