replace jshon with jq, as jshon is not as available and is also more cumbersome

bash_course/exercisesheet/sol.md

@@ -202,7 +202,7 @@ This exercise requires you to parse strings to display them nicely. That can be
 
     #!/bin/bash
     curl -A 'Mozilla/5.0 (Windows; U; MSIE 7.0; Windows NT 6.0; en-US)' -s https://www.reddit.com/r/showerthoughts.json \
-        | jshon -e data -e children -a -e data -e title \
+        | jq ".data.children[].data.title" \
         | shuf -n 1 \
         | sed 's/\\//g' \
         | sed 's/^"//' \

bash_course/guide/guide.md

@@ -950,19 +950,19 @@ such a daemon.
     # display only the first few lines of a very long text file
     head verylongtext.txt 
 
-**jshon**
+**jq**
 
-`jshon` is a very simple command-line json parser. It can read data in json format and return specific values.
+`jq` is a very simple command-line json parser. It can read data in json format and return specific values.
 
 Its most important options are `-e` and `-a`. `-e` extracts the value of a given key from a json array or object:
 
     # Find the object with key "title" from a json object stored in the file "json"
-    jshon -e 'title' < 'json'
+    jq '.title' < 'json'
 
 The `-a` option maps all remaining options across the currently selected element. It has to be combined with other options, for example the `-e` option. 
 
     # Find the names of all elements stored in the json object in file "json"
-    jshon -a -e 'name' < 'json'
+    jq '[].name' < 'json'
 
 
 **shuf**

bash_course/pres/build.sh

 #!/bin/bash
 echo "Building pdf..."
-pandoc -t beamer --template template.tex --listings pres.md -o pres-part.pdf --pdf-engine pdflatex \
-    && pandoc -t beamer --template template.tex --listings firstslide.md -o firstslide.pdf --pdf-engine pdflatex \
-    && pdfunite firstslide.pdf pres-part.pdf pres.pdf \
-    && rm firstslide.pdf pres-part.pdf \
+pandoc -t beamer --template template.tex --listings pres.md -o pres.pdf --pdf-engine pdflatex \
     && echo "Build successful"

bash_course/pres/firstslide.md

-# Welcome to the Bash Workshop!
-
-* Please turn of your camera for the lecture part of the course, we only have 2GB of RAM on this server
-
-* If there are any technical problems, let me know!

bash_course/pres/pres.md

 ---
 author:
-- Nicolas König
+- Alexander Schoch
 title: Bash Workshop
 ---
 
@@ -53,10 +53,10 @@ title: Bash Workshop
     echo Bash is awesome
 
     # Now some fun stuff:
-    sudo zypper update
+    sudo dnf update
     notify-send 'Update complete'
     feh --bg-fill 'pictures/fancy_wallpaper.jpg'
-    youtube-dl -o 'Video.%(ext)s' 'https://www.youtube.com/watch?v=lAIGb1lfpBw'
+    youtube-dl -o 'Video.%(ext)s' 'https://www.youtube.com/watch?v=dQw4w9WgXcQ'
 
 ### What bash can do
 
@@ -171,13 +171,13 @@ title: Bash Workshop
 ### Bash doesn’t only run commands
 
 * *Tilde expansion*\
-	 `~/files` becomes `/home/alinea/files`
+	 `~/files` becomes `/home/alex/files`
 * *Variable expansion*\
 	 `$BROWSER` becomes `Firefox`
 * *Arithmetic expansion*\
 	 `$(( 1 + 4 ))` becomes `5`
 * *Command substitution*\
-	 `$( pwd )` becomes `/home/alinea/scripts`
+	 `$( pwd )` becomes `/home/alex/scripts`
 * *Pathname expansion* (or *globbing*)\
 	 `files/qui*` becomes `files/quicknotes files/quiz`
 
@@ -187,7 +187,7 @@ title: Bash Workshop
 * Double quotes (") don't prevent expansion, but single quotes (') do.
 
         $ echo "$HOME" '$HOME'
-        /home/alinea $HOME
+        /home/alex $HOME
 
 * Expansion happens *before word splitting*
 

bash_course/pres/scripts/example

@@ -5,8 +5,8 @@ echo Hello World
 echo Bash is awesome
 
 # Now some fun stuff:
-sudo zypper update
+sudo dnf update
 notify-send "Update complete"
 feh --bg-fill "pictures/fancy_wallpaper.jpg"
-youtube-dl -o "Video.%(ext)s" "https://www.youtube.com/watch?v=lAIGb1lfpBw"
+youtube-dl -o "Video.%(ext)s" "https://www.youtube.com/watch?v=dQw4w9WgXcQ"