diff --git a/examples/ch1.2-10/hello.go b/examples/ch1.2-10/hello.go
index 612add6..03b9525 100644
--- a/examples/ch1.2-10/hello.go
+++ b/examples/ch1.2-10/hello.go
@@ -1,4 +1,4 @@
-// ch1.2-10
+// chai2010.cn/gobook/examples/ch1.2-10
 
 // +build ignore
 
diff --git a/examples/ch1.2-11/hello.go b/examples/ch1.2-11/hello.go
index 5647c2e..2f260b6 100644
--- a/examples/ch1.2-11/hello.go
+++ b/examples/ch1.2-11/hello.go
@@ -1,4 +1,4 @@
-// ch1.2-11
+// chai2010.cn/gobook/examples/ch1.2-11
 
 // +build ignore
 
diff --git a/examples/ch1.2-12/hello.go b/examples/ch1.2-12/hello.go
index 9d8c09e..355b7ba 100644
--- a/examples/ch1.2-12/hello.go
+++ b/examples/ch1.2-12/hello.go
@@ -1,4 +1,4 @@
-// ch1.2-12
+// go run chai2010.cn/gobook/examples/ch1.2-12
 
 package main
 
diff --git a/examples/ch1.2-13/hello.go b/examples/ch1.2-13/hello.go
index 3a31d5a..ce3ed88 100644
--- a/examples/ch1.2-13/hello.go
+++ b/examples/ch1.2-13/hello.go
@@ -1,4 +1,4 @@
-// ch1.2-13
+// go run chai2010.cn/gobook/examples/ch1.2-13
 
 // +build ignore
 
diff --git a/examples/ch1.2-14/hello.go b/examples/ch1.2-14/hello.go
index 92bfeff..e6d4871 100644
--- a/examples/ch1.2-14/hello.go
+++ b/examples/ch1.2-14/hello.go
@@ -1,6 +1,4 @@
-// ch1.2-14
-
-// +build ignore
+// go run chai2010.cn/gobook/examples/ch1.2-14
 
 package main
 
diff --git a/examples/ch1.2-15/hello.go b/examples/ch1.2-15/hello.go
index 7210aaa..8e98b74 100644
--- a/examples/ch1.2-15/hello.go
+++ b/examples/ch1.2-15/hello.go
@@ -1,4 +1,4 @@
-// ch1.2-15
+// go run chai2010.cn/gobook/examples/ch1.2-15
 
 package main
 
diff --git a/examples/ch1.2-16/main.go b/examples/ch1.2-16/main.go
index f56da7b..649d4cd 100644
--- a/examples/ch1.2-16/main.go
+++ b/examples/ch1.2-16/main.go
@@ -1,4 +1,4 @@
-// 1.2-16
+// go run chai2010.cn/gobook/examples/ch1.2-16
 
 package main