diff --git a/linux_toolkit_2021/bash.sh b/linux_toolkit_2021/bash.sh
new file mode 100644
index 0000000000000000000000000000000000000000..483af598aa09702b2b7efb1cac085813296cf5c0
--- /dev/null
+++ b/linux_toolkit_2021/bash.sh
@@ -0,0 +1,10 @@
+#! /bin/bash
+
+keypause=200
+commandpause=3
+
+while read line 
+do 
+	xdotool key --delay $keypause $line
+	sleep $commandpause
+od < $1
diff --git a/linux_toolkit_2021/css/remark.css b/linux_toolkit_2021/css/remark.css
index 475808d44bb090ad6cb3c224550da04e3c149cc7..73ea92d818e3b0652def11282c1292aafa4078ca 100644
--- a/linux_toolkit_2021/css/remark.css
+++ b/linux_toolkit_2021/css/remark.css
@@ -28,11 +28,6 @@ h1, h2, h3 {
 	max-width: 100%;
 }
 
-
-img {
-	width: 40%;
-}
-
 .remark-inline-code {
 	color: #f18a21;
 }
diff --git a/linux_toolkit_2021/illustrations.bmpr b/linux_toolkit_2021/illustrations.bmpr
new file mode 100644
index 0000000000000000000000000000000000000000..7a31a7bb976f5151d63ebd9aada2d112eb49cbbb
Binary files /dev/null and b/linux_toolkit_2021/illustrations.bmpr differ
diff --git a/linux_toolkit_2021/images/categorization.png b/linux_toolkit_2021/images/categorization.png
new file mode 100644
index 0000000000000000000000000000000000000000..45b22cbb3fadccf305602d3073654c5b30758c66
--- /dev/null
+++ b/linux_toolkit_2021/images/categorization.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:e892c4f46356213614b559b5941dffe2c8ac3193cb073319aaa452421087e218
+size 8176
diff --git a/linux_toolkit_2021/images/terminal_old.jpg b/linux_toolkit_2021/images/terminal_old.jpg
new file mode 100644
index 0000000000000000000000000000000000000000..40268b252c619e7afb356d862ccadc346f0b20dd
--- /dev/null
+++ b/linux_toolkit_2021/images/terminal_old.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:e73ddb8fd592117d6369cb5dbd5827dc3cbd0e982f9b8e8f25ccdcc19004951f
+size 124042
diff --git a/linux_toolkit_2021/images/terminal_old.webp b/linux_toolkit_2021/images/terminal_old.webp
new file mode 100644
index 0000000000000000000000000000000000000000..fcd285bd05f9ce84a834b7b4dd7e2ea5f9db3444
Binary files /dev/null and b/linux_toolkit_2021/images/terminal_old.webp differ
diff --git a/linux_toolkit_2021/index.html b/linux_toolkit_2021/index.html
index 429258a85cf983f14f1534a05b5ad0adca465727..0f370f80bc266f88cbe683eedf66dc4efb551486 100644
--- a/linux_toolkit_2021/index.html
+++ b/linux_toolkit_2021/index.html
@@ -25,6 +25,7 @@ class: center, middle
 
 ...a wide spectrum of available **tools** and what you can do with them.
 
+
 ---
 
 # Goals
@@ -78,12 +79,13 @@ Many of the classical Linux tools adhere to the "UNIX principle":
 In a wider, non-programming sense: It's useful to  
 learn things that are small, orthogonal, and compose.
 
+---
 
 # Bash
 
 Related words: terminal, terminal emulator, shell, command line, ...
 
-<img src="images/bash.png">
+<img src="images/bash.png" width="50%">
 
 In a nutshell:  
 Bash is a tool that let's you interact with your computer via text.
@@ -105,11 +107,37 @@ Some commands are really just programs: try typing `firefox` and hitting Enter i
 
 ---
 
-# TODO ls & cd video
+# Filesystem basics
+
+List files and show where we are:
+
+```bash
+ls
+pwd
+```
+
+Enter or leave directories:
+
+```bash
+cd my_folder
+cd ..
+cd /home/nils/Desktop
+cd ~/Desktop
+```
 
 ---
 
-# TODO: vocab
+# Bash terminology
+
+**terminal** is the window in which bash runs.
+
+bash is a kind of **shell**. there are others!
+
+
+<img src="images/terminal_old.webp" alt="https://www.reddit.com/r/raspberry_pi/comments/6se1qy/old_terminal_connected_to_my_pi_emulating_a_modem/" width="60%">
+
+
+
 
 ---
 
@@ -131,9 +159,7 @@ Both redirect command output:
 - `|` redirects to a new command ("piping")
 - `>` redirects into a file ("file redirection" or "redirection" for short)
 
-<img src="images/cat.png" width="30%">
-<img src="images/catpipe.png" width="30%">
-<img src="images/catpiperedirection.png" width="30%">
+<img src="images/catpiperedirection.png" width="60%">
 
 ---
 
@@ -174,6 +200,8 @@ done
 
 ---
 
+class: center, middle
+
 # Tool Galore
 
 We will now talk about multiple tools and how to combine them using bash (mostly).
@@ -190,7 +218,7 @@ two main choices:
 
 these fill niches that bash doesn't, but are still close to the system.
 
-<img src="images/polygon.png">
+<img src="images/polygon.png" width="50%">
 
 ---
 
@@ -394,12 +422,27 @@ xdotool mousemove 20 100 click 1 sleep 2 mosemove 100 20
 
 ---
 
+# Summary
+
+<img src="images/categorization.png" width="60%">
+
+Categories:
+- downloading (like wget, ssh, rsync)
+- text processing (like vim, sed, bash)
+- file conversion (like ffmpeg, pandoc, convert)
+- searching (like sed, grep, find)
+- glue (like xdotools, rofi, xbindkeys, notify-send, python, bash)
+
+---
+
 # Longlist of interesting tools
 
 **stow** lets you manage config files easily.  
 **ranger** is a console-based file manager.  
 **i3** is an alternative window-manager.  
-**borg** is a backup tool.
+**borg** is a backup tool.  
+**nano** is an easy to use console text-editor.
+**rsync** to copy files between machines.
 
 
 ---