diff --git a/hybrid-linux/index.js b/hybrid-linux/index.js
index 2e541d0..d4a5d31 100644
--- a/hybrid-linux/index.js
+++ b/hybrid-linux/index.js
@@ -87,7 +87,7 @@
 
     {
           "chapter": 7,
-          "title": "Exercise",
+          "title": "Exercise1",
           "subtitle": "subtitle",
           "type": "exercise",
           "desc": "find and grep commands",
@@ -96,8 +96,8 @@
           "answerfile": "ex_find_and_grep_answer.adoc"
     },
     {
-          "chapter": 7,
-          "title": "Exercise",
+          "chapter": 8,
+          "title": "Exercise2",
           "subtitle": "subtitle",
           "type": "exercise",
           "desc": "find and grep commands",
@@ -105,8 +105,8 @@
           "file": "ex_find_and_grep.adoc"
     },
     {
-          "chapter": 8,
-          "title": "Exercise",
+          "chapter": 9,
+          "title": "Exercise3",
           "subtitle": "subtitle",
           "type": "exercise",
           "desc": "find and grep commands",
@@ -114,8 +114,8 @@
           "file": "ex_find_and_grep.adoc"
     },
     {
-          "chapter": 9,
-          "title": "Exercise",
+          "chapter": 10,
+          "title": "Exercise4",
           "subtitle": "subtitle",
           "type": "exercise",
           "desc": "find and grep commands",
@@ -123,8 +123,8 @@
           "file": "ex_find_and_grep.adoc"
     },
     {
-          "chapter": 10,
-          "title": "Exercise",
+          "chapter": 11,
+          "title": "Exercise5",
           "subtitle": "subtitle",
           "type": "exercise",
           "desc": "find and grep commands",