diff --git a/scripts/chapter9/9.9-shells.sh b/scripts/chapter9/9.9-shells.sh
new file mode 100644
index 0000000..f5fab70
--- /dev/null
+++ b/scripts/chapter9/9.9-shells.sh
@@ -0,0 +1,11 @@
+#!/bin/bash
+
+cat > /etc/shells.sh << "EOF"
+# Begin /etc/shells
+
+/bin/sh
+/bin/bash
+
+# End /etc/shells
+EOF
+
diff --git a/scripts/main.sh b/scripts/main.sh
index 87cd318..e579c59 100644
--- a/scripts/main.sh
+++ b/scripts/main.sh
@@ -1535,3 +1535,15 @@ then
 	stop_script "chapter9/9.8-inputrc.sh"
 fi
 
+# Chapter 9.9
+# ===========
+echo "Creating /etc/shells"
+su -c "bash $SCRIPT/chapter9/9.9-shells.sh"
+
+# Exit on error
+check_exit_code
+if [ $exit_status -ne 0 ]
+then
+	stop_script "chapter9/9.9-shells.sh"
+fi
+