diff --git a/2020/2020-02-15_gnuLinuxCourse/slides/index.md b/2020/2020-02-15_gnuLinuxCourse/slides/index.md
index e2c016f1754aec5462a6afeec3a09b8a1774ce51..54410d9da304fd7d8a7afa87f56761297e702d9a 100644
--- a/2020/2020-02-15_gnuLinuxCourse/slides/index.md
+++ b/2020/2020-02-15_gnuLinuxCourse/slides/index.md
@@ -1,6 +1,6 @@
-# Presentation Title
+# Introduction to GNU/Linux (Shell)
-## Month XYth, 2019
+## 26 March 2020
<div style="top: 6em; left: 0%; position: absolute;">
<img src="theme/img/lcsb_bg.png">
diff --git a/2020/2020-02-15_gnuLinuxCourse/slides/intro_aim.md b/2020/2020-02-15_gnuLinuxCourse/slides/intro_aim.md
index 992e314d5ce66bafe37c64c3f027a49031b24c6e..7a24347ffa13ebff6e98456051528a8dab2d5bc2 100644
--- a/2020/2020-02-15_gnuLinuxCourse/slides/intro_aim.md
+++ b/2020/2020-02-15_gnuLinuxCourse/slides/intro_aim.md
@@ -1,33 +1,13 @@
# Aims of the Tutorial
-
-* Connect to a GNU/Linux server
- + SSH, a de-facto standard for secure communication
-
- <!-- .element: class="fragment" -->
- + For Windows users
- - [MobaXterm][1] (_recommended by R3_)
- - [PuTTY][2], simple, ugly, but efficient and open source and does only SSH
+* Gain Familiarity With the Unix Shell
+ - And hint at ways it can be harnessed to give great power to the
+ user
- <!-- .element: class="fragment" -->
- + For Mac and GNU/Linux users, OpenSSH command line client
-
- <!-- .element: class="fragment" -->
-
<!-- .element: class="fragment" -->
-* Explore how to use the shell effectively
- * We will use bash which is (almost) universaly present
- - Steve Jobs did not like the license, but ...
- ```shell
- brew install bash
- ```
-
- <!-- .element: class="fragment" -->
-
- <!-- .element: class="fragment" -->
-
+* Connect to a GNU/Linux server
+ + Using SSH, a de-facto standard for secure communication
+
<!-- .element: class="fragment" -->
-
-[1]: https://mobaxterm.mobatek.net/download-home-edition.html
-[2]: https://www.chiark.greenend.org.uk/~sgtatham/putty/latest.html
+<!-- <iframe width="560" height="315" src="https://www.youtube-nocookie.com/embed/A-HIlNGczgU" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe> -->
diff --git a/2020/2020-02-15_gnuLinuxCourse/slides/intro_beforewebegin.md b/2020/2020-02-15_gnuLinuxCourse/slides/intro_beforewebegin.md
index e8c3dc090c39e55efb1bf20e53cd4ce6412a34e7..112a8b8f296de1eb6e5a083ef222341a1fbdcfa0 100644
--- a/2020/2020-02-15_gnuLinuxCourse/slides/intro_beforewebegin.md
+++ b/2020/2020-02-15_gnuLinuxCourse/slides/intro_beforewebegin.md
@@ -1,4 +1,4 @@
-# Before We Begin ...
+# Or, the Beginning of One?
* Learning GNU/Linux has never been easier!
+ An explosion of [resources for self-study][1]
@@ -18,7 +18,7 @@
<!-- .element: class="fragment" -->
-[1]: https://git-r3lab.uni.lu/R3/school/courses/blob/gnu-linux/2020/2020-02-15_gnuLinuxCourse/resources.md
+[1]: https://git-r3lab.uni.lu/R3/school/courses/blob/develop/2020/2020-02-15_gnuLinuxCourse/resources.md
[2]: https://duckduckgo.com
[3]: https://unix.stackexchange.com/
[4]: https://www.reddit.com/r/linux/
diff --git a/2020/2020-02-15_gnuLinuxCourse/slides/intro_first.md b/2020/2020-02-15_gnuLinuxCourse/slides/intro_first.md
index 51fc2d7c19db2d51788e9de2555b561dc242df91..0865c661f5f44d9008c2035c8c9d86bba61f43cc 100644
--- a/2020/2020-02-15_gnuLinuxCourse/slides/intro_first.md
+++ b/2020/2020-02-15_gnuLinuxCourse/slides/intro_first.md
@@ -11,7 +11,8 @@
<!-- .element: class="fragment" -->
+ GNU/Linux user since [Debian Woody][5] (ca 2002)
- + Arrived as a seven CD set from a small computer shop from the [Getting Debian][6]
+ + Arrived as a seven CD set from a small computer shop from the
+ list of international vendors at [Getting Debian][6]
<!-- .element: class="fragment" -->
diff --git a/2020/2020-02-15_gnuLinuxCourse/slides/last.md b/2020/2020-02-15_gnuLinuxCourse/slides/last.md
new file mode 100644
index 0000000000000000000000000000000000000000..47ec8cf89f9fe8b3ac213423442751add7b05fab
--- /dev/null
+++ b/2020/2020-02-15_gnuLinuxCourse/slides/last.md
@@ -0,0 +1,3 @@
+# The End
+
+* Thanks for your attention!
diff --git a/2020/2020-02-15_gnuLinuxCourse/slides/list.json b/2020/2020-02-15_gnuLinuxCourse/slides/list.json
index 294a1356765da975c2a80cd7c7c207463173ca53..88db4375102bacf3e78a2714efc67109939ecf88 100644
--- a/2020/2020-02-15_gnuLinuxCourse/slides/list.json
+++ b/2020/2020-02-15_gnuLinuxCourse/slides/list.json
@@ -1,8 +1,18 @@
[
{ "filename" : "index.md" },
{ "filename" : "intro_first.md"},
+ { "filename" : "the-end.md"},
{ "filename" : "intro_beforewebegin.md"},
{ "filename" : "intro_aim.md"},
+ { "filename" : "shell.md"},
+ { "filename" : "shell/start.md"},
+ { "filename" : "shell/file-explorer-basic.md"},
+ { "filename" : "shell/file-explorer-basic-concepts.md"},
+ { "filename" : "shell/effective-cmd-editing.md"},
+ { "filename" : "shell/effective-cmd-editing-concepts.md"},
+ { "filename" : "shell/cp-mv.md"},
+ { "filename" : "shell/rm.md"},
+ { "filename" : "shell/cp-mv-rm-concepts.md"},
{ "filename" : "ssh_intro.md"},
{ "filename" : "ssh_intro_2.md"},
{ "filename" : "ssh_intro_3.md"},
@@ -16,5 +26,6 @@
{ "filename" : "ex_ssh_win/ssh_keygen.md"},
{ "filename" : "ex_ssh_lin/intro.md"},
{ "filename" : "ex_ssh_lin/session_shell.md"},
- { "filename" : "ex_ssh_lin/session_shell_2.md"}
+ { "filename" : "ex_ssh_lin/session_shell_2.md"},
+ { "filename" : "last.md"}
]
diff --git a/2020/2020-02-15_gnuLinuxCourse/slides/shell.md b/2020/2020-02-15_gnuLinuxCourse/slides/shell.md
new file mode 100644
index 0000000000000000000000000000000000000000..3ca1780838213739bc7ffba0501774cd58f5b7ad
--- /dev/null
+++ b/2020/2020-02-15_gnuLinuxCourse/slides/shell.md
@@ -0,0 +1,62 @@
+# The Barrier between the Human and the Machine
+<div class="multicol">
+
+<div class="col" data-markdown>
+
+* What is a shell?
+ - Omnipresent user interface
+
+ <!-- .element: class="fragment" -->
+ - It interprets commands given by the user
+
+ <!-- .element: class="fragment" -->
+ - It is heavily keyboard based
+
+ <!-- .element: class="fragment" -->
+
+<!-- .element: class="fragment" -->
+
+* Shell runs within a terminal application
+ - In ancient times, these were actual pieces of hardware
+
+ <!-- .element: class="fragment" -->
+ - Today, a program that echoes user input and displays command results
+
+ <!-- .element: class="fragment" -->
+
+<!-- .element: class="fragment" -->
+
+* How to access it?
+ - **GNU/Linux systems:**
+ - Depends on the desktop interface (of which there are many)
+ - Access from a `Start`-like menu, or a `Win`-key search as
+ *terminal*, or *console*
+ - if all else fails, `Ctrl` + `Alt` + `F[2-6]`
+
+ <!-- .element: class="fragment" -->
+ - **Windows:** [MobaXterm][1] which you hopefully installed
+
+ <!-- .element: class="fragment" -->
+ - **Mac:** Built-in terminal; *Spotlight* search for *terminal*
+
+ <!-- .element: class="fragment" -->
+
+<!-- .element: class="fragment" -->
+
+</div>
+
+<div class="col" data-markdown>
+
+<img src="variae/figs/shell/3270.jpg" width="90%" />
+
+<!-- .element: class="fragment" -->
+
+</div>
+
+</div>
+
+
+[terminal]: variae/figs/shell/3270.jpg "IBM 3270"
+
+[1]: https://mobaxterm.mobatek.net/download-home-edition.html
+
diff --git a/2020/2020-02-15_gnuLinuxCourse/slides/shell/cp-mv-rm-concepts.md b/2020/2020-02-15_gnuLinuxCourse/slides/shell/cp-mv-rm-concepts.md
new file mode 100644
index 0000000000000000000000000000000000000000..198dbdf6b41a775204bcfaa004aabe75e02a3bb2
--- /dev/null
+++ b/2020/2020-02-15_gnuLinuxCourse/slides/shell/cp-mv-rm-concepts.md
@@ -0,0 +1,20 @@
+# File Explorer: Copy(cp), Move(mv) and Remove(rm) (Concepts)
+
+* cp, mv and rm can act on either files, or directories
+ ```shell
+ cp file1 file2
+ mv file1 file2
+
+ cp -R dir1 new/location
+ mv dir1 new/location
+
+ cp file1 file2 ... some/existing/dir
+ mv file1 file2 ... some/existing/dir
+
+ rm file1 ...
+ rm -R dir
+ rm -Rf dir # Danger!
+ ```
+
+* Effectiveness of these commands greatly improved by file patterns
+ - *, ., [0-9],[ABC], {}, etc
diff --git a/2020/2020-02-15_gnuLinuxCourse/slides/shell/cp-mv.md b/2020/2020-02-15_gnuLinuxCourse/slides/shell/cp-mv.md
new file mode 100644
index 0000000000000000000000000000000000000000..3c4cc1275dc5af7a7c55259d49c7170525646eaa
--- /dev/null
+++ b/2020/2020-02-15_gnuLinuxCourse/slides/shell/cp-mv.md
@@ -0,0 +1,16 @@
+# File Explorer: Copy(cp), Move(mv) and Remove(rm) File Operations
+
+```console
+$ mkdir linux-practical-03
+$ cp linux-practical-01/pr1-hello-world.txt linux-practical-03/pr3-hello-world.txt # cp arg1 arg2: copy file arg1 to file arg2
+$ mkdir linux-practical-03/dump
+$ cp -R linux-practical-01 linux-practical-03/dump # Copy the entire content of linux-practical-01
+$ # to dump subdirectory of linux-practical-03
+$ ls linux-practical-03/dump # Check if linux-practical-01 is there.
+$ # Move one up in history, jump to the beginning of the line ('Ctrl'+'A'), then
+$ # replace 'ls' with 'mv'
+$ # From then on ...
+$ mv linux-practical-03/dump linux-practical-03/dump2 # Congratulations, you just renamed dump to dump2.
+$ ls linux-practical-03 # Check the content. The directory dump should not exist.
+
+```
diff --git a/2020/2020-02-15_gnuLinuxCourse/slides/shell/effective-cmd-editing-concepts.md b/2020/2020-02-15_gnuLinuxCourse/slides/shell/effective-cmd-editing-concepts.md
new file mode 100644
index 0000000000000000000000000000000000000000..7cf129fa239fe45f00269da04539f0df6fa5b223
--- /dev/null
+++ b/2020/2020-02-15_gnuLinuxCourse/slides/shell/effective-cmd-editing-concepts.md
@@ -0,0 +1,15 @@
+# File Explorer: Effective Command Line Editing (Concepts)
+
+* Moving using arrow keys is tedious
+
+* Retyping commands that contain a typo is even more tedious
+
+* *Readline* facility of the bash shell offers quicker navigation
+ - Move by a word left and right using `Ctrl`+`Left`, or `Right`
+ - Move to a beginning, or the end of the line using `Ctrl`+`A` and `Ctrl`+`E`
+ - Delete an entire word using `Alt`+`D`
+ - Paste a deleted word with `Ctrl`+`Y`
+
+* Reuse previous commands!
+ - The shell remembers what you type
+ - Move to a previous line in history using `Up` and `Down` arrows
diff --git a/2020/2020-02-15_gnuLinuxCourse/slides/shell/effective-cmd-editing.md b/2020/2020-02-15_gnuLinuxCourse/slides/shell/effective-cmd-editing.md
new file mode 100644
index 0000000000000000000000000000000000000000..b4734d3ac9d236f5b94bafa757b6de1db2302ee0
--- /dev/null
+++ b/2020/2020-02-15_gnuLinuxCourse/slides/shell/effective-cmd-editing.md
@@ -0,0 +1,25 @@
+# File Explorer: Effective Command Line Editing
+
+```console
+$ # Move up the history list until 'mkdir linux-practical-01'.
+$ # Move cursor using word motions 'Ctrl' + 'Left', or
+$ # 'Ctrl' + 'Right' around the command to get the feel for word motions.
+$ # Move cursor using begin ('Ctrl' + 'A') and end ('Ctrl' + 'E')
+$ # motions to the beginning and the end of the line.
+$ mkdir linux-practical-02 # Based on the previous command + motions.
+$ cd lin # TAB to complete, then TAB two times to list possible endings.
+$ cd linux-practical-02 # Based on the previous completion.
+$ # Move up the history list to mkdir subdir-01
+$ mkdir subdir-02
+$ # Move up the history to the touch subdir-01/a ... command.
+$ # Replace 1 with 2 using 'Ctrl' + 'A' and word motions.
+$ touch subdir-02/a subdir-02/b subdir-02/c
+$ history 10 # Lists last ten commands.
+$ cd
+```
+<!-- * Motions -->
+<!-- - `Left` and `Right` arrow move one character left, or right -->
+<!-- - `Ctrl` + `Left`, or `Right` move left, or right for one word -->
+<!-- - `Ctrl` + `A`, or `E` move to the beginning, or the end of the line -->
+<!-- - `Up` and `Down` move through history entries -->
+<!-- - `TAB` completes -->
diff --git a/2020/2020-02-15_gnuLinuxCourse/slides/shell/file-explorer-basic-concepts.md b/2020/2020-02-15_gnuLinuxCourse/slides/shell/file-explorer-basic-concepts.md
new file mode 100644
index 0000000000000000000000000000000000000000..7723a20d4d2d9ddd28218e1630e817fa3b09894f
--- /dev/null
+++ b/2020/2020-02-15_gnuLinuxCourse/slides/shell/file-explorer-basic-concepts.md
@@ -0,0 +1,14 @@
+# File Explorer: Basics (Concepts)
+
+* While interacting with a shell, we are always in a given *working directory*
+* Data is organised into directories and files, like on other systems.
+* Location of a file in respect to the current directory is given by a (*relative*) file path
+ - some/dir/with/a/file
+
+* New commands:
+ - `pwd` : outputs the current working directory
+ - `ls [-lhd ... file1 file2 file3 ...]` : lists files
+ - `cd path/to/existing/dir` : change current directory to a new directory
+ - `mkdir [-p] path/to/new/dir` : creates a new directory
+ - `touch file1 [file2 file3 ...]` : creates an empty file.
+ - `history` : view the list of commands executed so far
diff --git a/2020/2020-02-15_gnuLinuxCourse/slides/shell/file-explorer-basic.md b/2020/2020-02-15_gnuLinuxCourse/slides/shell/file-explorer-basic.md
new file mode 100644
index 0000000000000000000000000000000000000000..24154e32e2fa7d0fbb2603774401c6f148d96010
--- /dev/null
+++ b/2020/2020-02-15_gnuLinuxCourse/slides/shell/file-explorer-basic.md
@@ -0,0 +1,21 @@
+# File Explorer: Basics
+```console
+$ pwd # Displays the absolute path to the current dirrectory.
+$ ls # List contents of the current directory.
+$ mkdir linux-practical-01 # Create a new directory.
+$ cd linux-practical-01 # Switch to a different directory.
+$ touch pr1-hello-world.txt # Create a new and empty file.
+$ mkdir subdir-01 # Create another directory.
+$ touch subdir-01/a subdir-01/b subdir-01/c # Create multiple empty files.
+$ ls subdir-01 # List contents of directory.
+$ mkdir -p subdir-02/dir-X/dir-Y/dir-Z # Create a nested directory under the path.
+$ ls subdir-02/dir-X # Confirm the directory dir-Y has been created.
+$ history # Lists the commands executed so far.
+$ cd
+```
+
+<!-- * Concepts -->
+<!-- - Files and directories -->
+<!-- - Paths -->
+<!-- - Importance of quoting -->
+<!-- - History -->
diff --git a/2020/2020-02-15_gnuLinuxCourse/slides/shell/rm.md b/2020/2020-02-15_gnuLinuxCourse/slides/shell/rm.md
new file mode 100644
index 0000000000000000000000000000000000000000..348794912ce36a429fc8e5c8b116a220f07e3f82
--- /dev/null
+++ b/2020/2020-02-15_gnuLinuxCourse/slides/shell/rm.md
@@ -0,0 +1,15 @@
+# File Explorer: Copy(cp), Move(mv) and Remove(rm) File Operations
+
+* Removing files and directories.
+
+```console
+$ rm linux-practical-03/pr3-hello-world.txt # Deletes the file.
+$ # History, one up then adapt the command into
+$ cd linux-practical-03
+$ ls # Check if it is indeed deleted.
+$ rm -R dump2 # Recursively remove directory dump2 and all of its contents.
+$ history 10 # Just to remind yourself what you did in last ten steps.
+$ cd
+
+```
+
diff --git a/2020/2020-02-15_gnuLinuxCourse/slides/shell/start.md b/2020/2020-02-15_gnuLinuxCourse/slides/shell/start.md
new file mode 100644
index 0000000000000000000000000000000000000000..e36cb9d2453e0a418a663e152d4b499a6c678ad0
--- /dev/null
+++ b/2020/2020-02-15_gnuLinuxCourse/slides/shell/start.md
@@ -0,0 +1,16 @@
+# Command Line
+
+
+* **Command prompt:** Non-editable; May provide contextual information
+* **Command area:** Typed commands are shown here
+* **RETURN or ENTER:** Pressing this key will execute the command
+
+* General form of the commands
+ ```shell
+ prompt$ ls
+ prompt$ ls -a
+ prompt$ ls --help
+ prompt$ rsync -avz /path/to/file/a /path/to/file/b
+ prompt$ make -j8
+ prompt$ gfortran -c -mtune=native
+ ```
diff --git a/2020/2020-02-15_gnuLinuxCourse/slides/the-end.md b/2020/2020-02-15_gnuLinuxCourse/slides/the-end.md
new file mode 100644
index 0000000000000000000000000000000000000000..dfa2ee28dd1ccb29974f19fd753a49fabae15cac
--- /dev/null
+++ b/2020/2020-02-15_gnuLinuxCourse/slides/the-end.md
@@ -0,0 +1,3 @@
+# The End of an Era?
+
+<iframe width="100%" height="800" src="https://www.youtube.com/embed/A-HIlNGczgU?start=127" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
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index 0000000000000000000000000000000000000000..7a8db9b174d32ce8e5da3249606964507a08c006
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