diff --git a/docs/system.md b/docs/system.md
index 8b1a737..4886e76 100644
--- a/docs/system.md
+++ b/docs/system.md
@@ -229,7 +229,7 @@ import (
 )
 
 func main() {
-    out, errout, err := system.ExecCommand("ls")
+    out, errout, err := system.ExecCommand("ls", system.WithForeground())
     fmt.Println(out)
     fmt.Println(errout)
     fmt.Println(err)
diff --git a/docs/system_zh-CN.md b/docs/system_zh-CN.md
index 95ef795..e08a934 100644
--- a/docs/system_zh-CN.md
+++ b/docs/system_zh-CN.md
@@ -229,7 +229,7 @@ import (
 )
 
 func main() {
-    out, errout, err := system.ExecCommand("ls")
+    out, errout, err := system.ExecCommand("ls", system.WithForeground())
     fmt.Println(out)
     fmt.Println(errout)
     fmt.Println(err)