added scripts and 404 examples

mdbook_books/book_1/scripts/first_script.sh

@@ -0,0 +1,4 @@
+#! /bin/sh
+
+bash ./mdbook_books/"$@"/scripts/mdbook_script_1.sh
+bash ./mdbook_books/"$@"/scripts/mdbook_script_2.sh

mdbook_books/book_1/scripts/mdbook_script_1.sh

@@ -0,0 +1,3 @@
+#!/usr/bin/env bash
+
+echo "This is the mdbook script 1 from book 1"

mdbook_books/book_1/scripts/mdbook_script_2.sh

@@ -0,0 +1,3 @@
+#!/usr/bin/env bash
+
+echo "This is the mdbook script 2 from book 1"

mdbook_books/book_2/scripts/first_script.sh

@@ -0,0 +1,4 @@
+#! /bin/sh
+
+bash ./mdbook_books/"$@"/scripts/mdbook_script_1.sh
+bash ./mdbook_books/"$@"/scripts/mdbook_script_2.sh

mdbook_books/book_2/scripts/mdbook_script_1.sh

@@ -0,0 +1,3 @@
+#!/usr/bin/env bash
+
+echo "This is the mdbook script 1 from book 1"

mdbook_books/book_2/scripts/mdbook_script_2.sh

@@ -0,0 +1,3 @@
+#!/usr/bin/env bash
+
+echo "This is the mdbook script 2 from book 2"

src/404.md

@@ -1,7 +1,3 @@
 <h1>HTTP ERROR 404</h1>
 
-<h2>This page can’t be found.</h2>
-
-The page you're looking for might have moved somewhere else. 
-
-To find the content you're looking for, you can use the search function by clicking on the magnifier button at the top left of the page, or by hitting **'s'** on your keyboard.
+<h2>This page can’t be found.</h2>

src/examples/example_1.md

@@ -1 +1,3 @@
 # Example 1
+
+This is a text from example 1.

src/examples/example_2.md

@@ -1 +1,3 @@
 # Example 2
+
+This is a text from example 2.

src/examples/example_3.md

@@ -1 +1,3 @@
 # Example 3
+
+This is a text from example 3.