H7: Add table of contents

exercises/h7.md

@@ -6,6 +6,29 @@ Linux servers - Exercice 7
 
 This exercise is a part of [Linux servers (ICT4TN021, spring 2018) // Linux-palvelimet (ICT4TN021, kevät 2018)](http://www.haaga-helia.fi/fi/opinto-opas/opintojaksokuvaukset/ICT4TN021) school course organized as a part of Information Technology studies in Haaga-Helia university of Applied Sciences, Helsinki, Finland. Course lecturer [Tero Karvinen](http://terokarvinen.com/) has defined the original assignment descriptions in Finnish presented in this document in English. Answers and translations have been written by Pekka Helenius (me, ~ Fincer).
 
+*Table of contents:*
+--------------
+
+- [a) **Practical lab test** Solve a previously published final major test of this school course (You can find them with DuckDuckGo or Google).](https://github.com/Fincer/linux_server_setup/blob/master/exercises/h7.md#a-solve-a-previously-published-final-major-test-of-this-school-course-you-can-find-them-with-duckduckgo-or-google)
+
+    - [Initial set-up for remote control of a server](https://github.com/Fincer/linux_server_setup/blob/master/exercises/h7.md#initial-set-up-for-remote-control-of-a-server)
+
+    - [Security set-up for a company](https://github.com/Fincer/linux_server_setup/blob/master/exercises/h7.md#security-set-up-for-a-company)
+
+    - [System statistics](https://github.com/Fincer/linux_server_setup/blob/master/exercises/h7.md#system-statistics)
+
+    - [PHP from abroad](https://github.com/Fincer/linux_server_setup/blob/master/exercises/h7.md#php-from-abroad)
+
+    - [iot12tools - IoT tools for users](https://github.com/Fincer/linux_server_setup/blob/master/exercises/h7.md#iot12tools---iot-tools-for-users)
+
+    - [Hello Python 3](https://github.com/Fincer/linux_server_setup/blob/master/exercises/h7.md#hello-python-3)
+
+- [c) **Free-will Linux usage** (optional) Use Linux outside the course scope.](https://github.com/Fincer/linux_server_setup/blob/master/exercises/h7.md#c-optional-use-linux-outside-the-course-scope)
+
+    - [About my Linux usage](https://github.com/Fincer/linux_server_setup/blob/master/exercises/h7.md#about-my-linux-usage)
+
+--------------
+
 **a)** Solve a previously published final major test of this school course (You can find them with DuckDuckGo or Google).
 --------------
 
@@ -502,7 +525,7 @@ The following pictures demonstrate [Arch Linux ARM](https://archlinuxarm.org/pla
 
 - Desktop environment: LxQt
 
-### About my Linux usage:
+### About my Linux usage
 
 My first touch to Linux world was back in early spring, 2011. The first Linux distribution I installed was Ubuntu 10.04 LTS, and after that I have tried out many distributions, including Linux Mint, Fedora, OpenSUSE and Arch Linux.