diff --git a/Doku/default-jdk.tex b/Doku/default-jdk.tex
index d47effb74408d1aa4a92d861a9c5f2f6906a23c3..ab4bf56ec7b762369782966ed9caa2efb529a6b5 100644
--- a/Doku/default-jdk.tex
+++ b/Doku/default-jdk.tex
@@ -1,5 +1,12 @@
-\subsection{java7-jdk}
-Java7-JDK installiert einen Java7-Compiler und das Java7-Runtime-Environment, welches benötigt wird um Java-Code zu kompilieren und auszuführen. Des Weiteren werden auch die Standard-Bibliotheken installiert. Java7 wird in der Vorlesung  \enquote{Programmierung} eingeführt und benötigt.
+\subsection{default-jdk}
+Das Packet \texttt{default-jdk} installiert einen Java-Compiler und das zugehörige Java-Runtime-Environment, welches benötigt wird um Java-Code zu kompilieren und auszuführen.
+Des Weiteren werden auch die Standard-Bibliotheken installiert.
+Java wird in der Vorlesung \enquote{Programmierung} eingeführt und benötigt.
+Wenn \texttt{default-jdk} installiert ist, wird immer eine aktuell unterstützte Java-Langzeitversion installiert.
+Stand Juni 2022 ist das Java 11.
+Die neuere Langzeitversion kann unabhängig davon im Terminal mit dem Befehl \texttt{sudo apt install openjdk-17-jdk} installiert werden.
+Auf die gleiche Weise können auch andere Versionen, wie \texttt{openjdk-18-jdk} vom März 2022, installiert werden.
+Die nicht-Langzeitversionen werden aber nur für 6 Monate unterstützt.
 
 Beispielaufruf im Terminal mit: \texttt{javac java1.java} zum kompilieren\\
 \texttt{java java1} um die nun kompilierte Datei auszuführen.
diff --git a/Doku/dia.tex b/Doku/dia.tex
index 6938382d5503a864d938239752f8be79178f871d..16abab62648d4d932a4bc9d2de655690ef6ae281 100644
--- a/Doku/dia.tex
+++ b/Doku/dia.tex
@@ -1,8 +1,12 @@
 \subsection{dia}
 Dia ist ein Programm mit grafischer Oberfläche zur Erstellung verschiedener Diagramme; zum Beispiel UML-Diagramme (für Klassen und Usecases), Programmablaufdiagramme und vieles mehr. 
 Es ist hilfreich in der Vorlesung Softwaretechnik. 
-Dia bietet verschiedene Exportmöglichkeiten zum Beispiel nach \LaTeX{} sowie in die gängigen Bilderformate, sodass es universell verwendbar ist.
+Dia bietet verschiedene Exportmöglichkeiten zum Beispiel nach \LaTeX sowie in die gängigen Bilderformate, sodass es universell verwendbar ist.
 Das Programm arbeitet nach dem Prinzip "`What you see is what you get"'. 
 Mehr Infos unter \url{https://wiki.gnome.org/Apps/Dia}
 
-Aufzurufen in der Kommondozeile oder im \startmenu{} mit: \texttt{dia}
+\begin{center}
+    \includegraphics[width=0.95\linewidth]{screenshot/dia}
+\end{center}
+
+Aufzurufen in der Kommondozeile oder im \startmenu mit: \texttt{dia}
diff --git a/Doku/firefox.tex b/Doku/firefox.tex
index 0c46b6132ea0880f45770d045105f10c06c456b3..79158a64ff46217710c8fecb7208b177f4dffcb0 100644
--- a/Doku/firefox.tex
+++ b/Doku/firefox.tex
@@ -1,5 +1,9 @@
 \subsection{Firefox}
-\includegraphics[width=0.95\linewidth]{screenshot/firefox}
+
+\begin{center}
+    \includegraphics[width=0.95\linewidth]{screenshot/firefox}
+\end{center}
 
 Firefox ist dein Browser.
-Wenn du Google Chrome gewohnt bist und diesen weiterhin nutzen willst, kannst du Chromium installieren (im Terminal: \texttt{sudo apt install chromium-browser}). Das ist die Open-Source-Version von Google Chrome und funktioniert genauso.
+Wenn du Google Chrome gewohnt bist und diesen weiterhin nutzen willst, kannst du Chromium installieren (im Terminal: \texttt{sudo apt install chromium-browser}).
+Das ist die Open-Source-Version von Google Chrome und funktioniert genauso.
diff --git a/Doku/gdb.tex b/Doku/gdb.tex
index e11ed0aedc7cb65aee7c99e90e70028fc9a2cdbf..0cc61dfbad6dfde2a20bae054b5a1a038a6a2d8c 100644
--- a/Doku/gdb.tex
+++ b/Doku/gdb.tex
@@ -1,3 +1,4 @@
 \subsection{GNU Debugger}
 Der GNU Debugger \texttt{gdb} ist ein weiteres Werkzeug zum Debuggen von Programmen.
-Eine Anleitung ist unter \texttt{man gdb} zu finden.
+Eine kurze Anleitung ist unter \texttt{man gdb} zu finden.
+Ein ausführliche Dokumentation gibt es unter \url{https://sourceware.org/gdb/current/onlinedocs/gdb/index.html}.
diff --git a/Doku/gnuplot.tex b/Doku/gnuplot.tex
index 60a61719455a574145976ae0afde1d8025fd737c..294bccdf9c6fc06d5171df37c506e865b2ead26e 100644
--- a/Doku/gnuplot.tex
+++ b/Doku/gnuplot.tex
@@ -1,12 +1,12 @@
 \subsection{gnuplot}
 Gnuplot ist eine skriptbasierte Anwendung zum Plotten von zwei- oder dreidimensionalen Funktionen und Daten, die auch einen interaktiven Kommandozeilenmodus bietet.
-Zum Lernen von gnuplot bietet sich \url{http://www.gnuplot.info/docs/tutorial.pdf} an.
+Zum Lernen von gnuplot bietet sich \url{http://www.gnuplot.info/docs\_5.4/Gnuplot\_5\_4.pdf} an.
 Gnuplot kann Graphen in mehreren Modi, z.B. graphisch in einem Fenster, als ASCII-Art in der Kommandozeile, als PDF, SVG und sogar als \LaTeX{}, ausgeben.
 
 Aufzurufen im Terminal mit:\\
 \texttt{gnuplot}
 
-Mit den Folgenden Anweisungen in gnuplot werden die Graphen von $(x/4)^2$ $sin(x)$ und $1/x$ in den angegeben Grenzen gezeichnet.
+Mit den folgenden Anweisungen in gnuplot werden die Graphen von $(x/4)^2$, $\sin(x)$ und $1/x$ in den angegebenen Grenzen gezeichnet.
 
 \begin{verbatim}
 set title "Some Math Functions"
@@ -18,4 +18,10 @@ plot (x/4)**2, sin(x), 1/x
 Die Ausgabe sieht ähnlich wie die folgende aus:\\
 \input{gnuplot_plot}
 
+Mit den folgenden Anweisungen kann die Grafik auch in \LaTeX-Code exportiert werden.
+\begin{verbatim}
+set terminal cairolatex
+set output "gnuplot_plot.tex"
+\end{verbatim}
+
 \textbf{Achtung:} Gnuplot ist leider keine freie Software im Sinne der FSFE\footnote{Free Software Foundation Europe}, obwohl es GNU im Namen trägt. Im Besonderen enthält seine Lizenz eine Klausel, welche de facto das Verändern und Weitergeben von gnuplot verhindert. Ein größtenteils kompatible, freie Alternative ist \texttt{pyxplot}.
diff --git a/Doku/gnuplot_plot.pdf b/Doku/gnuplot_plot.pdf
new file mode 100644
index 0000000000000000000000000000000000000000..868d3691c6ecc381135d3c980709e14b6567ed29
Binary files /dev/null and b/Doku/gnuplot_plot.pdf differ
diff --git a/Doku/gnuplot_plot.tex b/Doku/gnuplot_plot.tex
index 34ea3f078e985eae8237daab263f6cbda7221901..db655e38bdde562f47873689c96ca66d27e07ca3 100644
--- a/Doku/gnuplot_plot.tex
+++ b/Doku/gnuplot_plot.tex
@@ -1,552 +1,128 @@
-% GNUPLOT: LaTeX picture
-\setlength{\unitlength}{0.240900pt}
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-\begin{picture}(1500,900)(0,0)
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+% GNUPLOT: LaTeX picture with Postscript
+\begingroup
+  \makeatletter
+  \providecommand\color[2][]{%
+    \GenericError{(gnuplot) \space\space\space\@spaces}{%
+      Package color not loaded in conjunction with
+      terminal option `colourtext'%
+    }{See the gnuplot documentation for explanation.%
+    }{Either use 'blacktext' in gnuplot or load the package
+      color.sty in LaTeX.}%
+    \renewcommand\color[2][]{}%
+  }%
+  \providecommand\includegraphics[2][]{%
+    \GenericError{(gnuplot) \space\space\space\@spaces}{%
+      Package graphicx or graphics not loaded%
+    }{See the gnuplot documentation for explanation.%
+    }{The gnuplot epslatex terminal needs graphicx.sty or graphics.sty.}%
+    \renewcommand\includegraphics[2][]{}%
+  }%
+  \providecommand\rotatebox[2]{#2}%
+  \@ifundefined{ifGPcolor}{%
+    \newif\ifGPcolor
+    \GPcolortrue
+  }{}%
+  \@ifundefined{ifGPblacktext}{%
+    \newif\ifGPblacktext
+    \GPblacktexttrue
+  }{}%
+  % define a \g@addto@macro without @ in the name:
+  \let\gplgaddtomacro\g@addto@macro
+  % define empty templates for all commands taking text:
+  \gdef\gplbacktext{}%
+  \gdef\gplfronttext{}%
+  \makeatother
+  \ifGPblacktext
+    % no textcolor at all
+    \def\colorrgb#1{}%
+    \def\colorgray#1{}%
+  \else
+    % gray or color?
+    \ifGPcolor
+      \def\colorrgb#1{\color[rgb]{#1}}%
+      \def\colorgray#1{\color[gray]{#1}}%
+      \expandafter\def\csname LTw\endcsname{\color{white}}%
+      \expandafter\def\csname LTb\endcsname{\color{black}}%
+      \expandafter\def\csname LTa\endcsname{\color{black}}%
+      \expandafter\def\csname LT0\endcsname{\color[rgb]{1,0,0}}%
+      \expandafter\def\csname LT1\endcsname{\color[rgb]{0,1,0}}%
+      \expandafter\def\csname LT2\endcsname{\color[rgb]{0,0,1}}%
+      \expandafter\def\csname LT3\endcsname{\color[rgb]{1,0,1}}%
+      \expandafter\def\csname LT4\endcsname{\color[rgb]{0,1,1}}%
+      \expandafter\def\csname LT5\endcsname{\color[rgb]{1,1,0}}%
+      \expandafter\def\csname LT6\endcsname{\color[rgb]{0,0,0}}%
+      \expandafter\def\csname LT7\endcsname{\color[rgb]{1,0.3,0}}%
+      \expandafter\def\csname LT8\endcsname{\color[rgb]{0.5,0.5,0.5}}%
+    \else
+      % gray
+      \def\colorrgb#1{\color{black}}%
+      \def\colorgray#1{\color[gray]{#1}}%
+      \expandafter\def\csname LTw\endcsname{\color{white}}%
+      \expandafter\def\csname LTb\endcsname{\color{black}}%
+      \expandafter\def\csname LTa\endcsname{\color{black}}%
+      \expandafter\def\csname LT0\endcsname{\color{black}}%
+      \expandafter\def\csname LT1\endcsname{\color{black}}%
+      \expandafter\def\csname LT2\endcsname{\color{black}}%
+      \expandafter\def\csname LT3\endcsname{\color{black}}%
+      \expandafter\def\csname LT4\endcsname{\color{black}}%
+      \expandafter\def\csname LT5\endcsname{\color{black}}%
+      \expandafter\def\csname LT6\endcsname{\color{black}}%
+      \expandafter\def\csname LT7\endcsname{\color{black}}%
+      \expandafter\def\csname LT8\endcsname{\color{black}}%
+    \fi
+  \fi
+    \setlength{\unitlength}{0.0500bp}%
+    \ifx\gptboxheight\undefined%
+      \newlength{\gptboxheight}%
+      \newlength{\gptboxwidth}%
+      \newsavebox{\gptboxtext}%
+    \fi%
+    \setlength{\fboxrule}{0.5pt}%
+    \setlength{\fboxsep}{1pt}%
+    \definecolor{tbcol}{rgb}{1,1,1}%
+\begin{picture}(7200.00,4320.00)%
+    \gplgaddtomacro\gplbacktext{%
+      \csname LTb\endcsname%%
+      \put(555,478){\makebox(0,0)[r]{\strut{}$-2$}}%
+      \csname LTb\endcsname%%
+      \put(555,866){\makebox(0,0)[r]{\strut{}$-1.5$}}%
+      \csname LTb\endcsname%%
+      \put(555,1254){\makebox(0,0)[r]{\strut{}$-1$}}%
+      \csname LTb\endcsname%%
+      \put(555,1642){\makebox(0,0)[r]{\strut{}$-0.5$}}%
+      \csname LTb\endcsname%%
+      \put(555,2030){\makebox(0,0)[r]{\strut{}$0$}}%
+      \csname LTb\endcsname%%
+      \put(555,2418){\makebox(0,0)[r]{\strut{}$0.5$}}%
+      \csname LTb\endcsname%%
+      \put(555,2806){\makebox(0,0)[r]{\strut{}$1$}}%
+      \csname LTb\endcsname%%
+      \put(555,3194){\makebox(0,0)[r]{\strut{}$1.5$}}%
+      \csname LTb\endcsname%%
+      \put(555,3582){\makebox(0,0)[r]{\strut{}$2$}}%
+      \csname LTb\endcsname%%
+      \put(656,239){\makebox(0,0){\strut{}$-10$}}%
+      \csname LTb\endcsname%%
+      \put(2211,239){\makebox(0,0){\strut{}$-5$}}%
+      \csname LTb\endcsname%%
+      \put(3766,239){\makebox(0,0){\strut{}$0$}}%
+      \csname LTb\endcsname%%
+      \put(5321,239){\makebox(0,0){\strut{}$5$}}%
+      \csname LTb\endcsname%%
+      \put(6876,239){\makebox(0,0){\strut{}$10$}}%
+    }%
+    \gplgaddtomacro\gplfronttext{%
+      \csname LTb\endcsname%%
+      \put(6074,3367){\makebox(0,0)[r]{\strut{}$(x/4)**2$}}%
+      \csname LTb\endcsname%%
+      \put(6074,3128){\makebox(0,0)[r]{\strut{}$sin(x)$}}%
+      \csname LTb\endcsname%%
+      \put(6074,2889){\makebox(0,0)[r]{\strut{}$1/x$}}%
+      \csname LTb\endcsname%%
+      \put(3766,3940){\makebox(0,0){\strut{}Some Math Functions}}%
+    }%
+    \gplbacktext
+    \put(0,0){\includegraphics[width={360.00bp},height={216.00bp}]{gnuplot_plot}}%
+    \gplfronttext
+  \end{picture}%
+\endgroup
diff --git a/Doku/graphviz.tex b/Doku/graphviz.tex
index 7475d4efa79e38ad749a1c6cdb1a573a2951fb7a..12d8d389de6baaffaa58434e4b4b38af215b5a77 100644
--- a/Doku/graphviz.tex
+++ b/Doku/graphviz.tex
@@ -14,5 +14,5 @@ digraph G {
 }
 \end{verbatim}
 wird mit dem Kommandozeilenaufruf \texttt{dot -T png beispiel.dot -o beispiel.png} zu\\
-\includegraphics[scale=0.5]{graph.png}
+\includegraphics[scale=0.5]{graph}
 \end{samepage}
diff --git a/Doku/gufw.tex b/Doku/gufw.tex
index f420b34e7ec486ce1358c5040b43cee8d2d25372..3f02487eb476c988ff9996f977917975b4173f3b 100644
--- a/Doku/gufw.tex
+++ b/Doku/gufw.tex
@@ -6,7 +6,7 @@ Achtung: Man kann sich damit seine Internetverbindung kaputt machen.
 Aufruf über Kommandozeile mit \texttt{gufw} und im \startmenu\  als \enquote{Firewall-Konfiguration} oder durch Suche nach Firewall.
 
 \begin{center}
-    \includegraphics[width=0.5\linewidth]{screenshot/gufw}
+    \includegraphics[width=0.95\linewidth]{screenshot/gufw}
 \end{center}
 
 Alternative: Konfiguration der Firewall über die Kommandozeile mit \texttt{sudo ufw [optionen]}.
diff --git a/Doku/kile.tex b/Doku/kile.tex
index c5868157f7a417b543289ca308b2cc9c1b34a085..007447ef069831dbde544c589298dd327c812d59 100644
--- a/Doku/kile.tex
+++ b/Doku/kile.tex
@@ -1,11 +1,12 @@
 \subsection{Kile}
 Kile ist ein Standard \LaTeX-Editor in KDE mit grafischer Oberfläche, welcher die wichtigsten Bibliotheken und Funktionen mitbringt.
 
-\includegraphics[width=0.95\linewidth]{screenshot/kile.png}
+\includegraphics[width=0.95\linewidth]{screenshot/kile}
 
 \LaTeX\ ist eine mächtige Textsatzsprache, die sich zum Erstellen von Dokumenten eignet. Dokumente werden in Klartext erstellt und anschließend nach PDF compiliert. Das Speichern im Klartextformat ist hilfreich für Versionsverwaltungssysteme wie \textsl{git} oder \textsl{svn} und ermöglicht, das Dokument auch ohne spezielle Software zu lesen und zu bearbeiten.
 
-Du kannst dir auch das \LaTeX-Kompendium\\\url{https://de.wikibooks.org/wiki/LaTeX-Kompendium} anschauen.
+Du kannst dir auch das \LaTeX-Kompendium\\
+\url{https://de.wikibooks.org/wiki/LaTeX-Kompendium} anschauen.
 Für weiterführende Informationen sei auch das englische \LaTeX Wikibook empfohlen:\\\url{http://en.wikibooks.org/wiki/LaTeX}.
 
 Aufzurufen über die grafische Oberfläche oder im Terminal mit: \texttt{kile}
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diff --git a/Doku/screenshot/texstudio.jpg b/Doku/screenshot/texstudio.jpg
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diff --git a/Doku/screenshot/thunderbird.jpg b/Doku/screenshot/thunderbird.jpg
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diff --git a/Doku/swi-prolog.tex b/Doku/swi-prolog.tex
index 52fb2f85086c694d63b05a44cd2fd8fd503519a7..9102b829dade60bd7f7d89e4f428b2c498c2583e 100644
--- a/Doku/swi-prolog.tex
+++ b/Doku/swi-prolog.tex
@@ -1,4 +1,5 @@
 \subsection{swi-prolog}
-swi-prolog installiert einen Prolog-Interpreter. Prolog wird in der Vorlesung \enquote{Programmierung} eingeführt und benötigt.
+swi-prolog installiert einen Prolog-Interpreter.
+Prolog wird in der Vorlesung \enquote{Programmierung} eingeführt und benötigt.
 
-Beispielaufruf im Terminal: Mit \texttt{swipl prolog1.pl} kompiliert und lädt man die Datei prolog1.pl; nun können Anfragen an prolog1 gestellt werden.
+Beispielaufruf im Terminal: Mit \texttt{swipl prolog1.pl} kompiliert und lädt man die Datei \texttt{prolog1.pl}; nun können Anfragen an prolog1 gestellt werden.
diff --git a/Doku/texstudio.tex b/Doku/texstudio.tex
index 37a7ecdc8914a02a696099af28336b631e8921f5..48558dd32ff7eacdb7082b36268d8d62f0fe8b76 100644
--- a/Doku/texstudio.tex
+++ b/Doku/texstudio.tex
@@ -1,11 +1,13 @@
 \subsection{TeXstudio}
 TeXstudio ist ein Standard \LaTeX-Editor mit grafischer Oberfläche, welcher die wichtigsten Bibliotheken und Funktionen mitbringt.
 
-\includegraphics[scale=0.4]{screenshot/texstudio.jpg}
+\includegraphics[width=0.95\linewidth]{screenshot/texstudio}
 
-\LaTeX\ ist eine mächtige Textsatzsprache, die sich zum Erstellen von Dokumenten eignet. Dokumente werden in Klartext erstellt und anschließend nach PDF compiliert. Das Speichern im Klartextformat ist hilfreich für Versionsverwaltungssysteme wie git oder svn und ermöglicht das Dokument auch ohne spezielle Software zu Lesen und zu Bearbeiten.
+\LaTeX\ ist eine mächtige Textsatzsprache, die sich zum Erstellen von Dokumenten eignet.
+Dokumente werden in Klartext erstellt und anschließend nach PDF compiliert.
+Das Speichern im Klartextformat ist hilfreich für Versionsverwaltungssysteme wie git oder svn und ermöglicht das Dokument auch ohne spezielle Software zu Lesen und zu Bearbeiten.
 
-Du kannst dir auch das \LaTeX-Kompendium (https://de.wikibooks.org/wiki/LaTeX-Kompendium) anschauen.
+Du kannst dir auch das \LaTeX-Kompendium (\url{https://de.wikibooks.org/wiki/LaTeX-Kompendium}) anschauen.
 
 Aufzurufen über die grafische Oberfläche oder im Terminal mit:
 \texttt{texstudio}
diff --git a/Doku/thunderbird.tex b/Doku/thunderbird.tex
index 7132270cdd59e9e65ad0216c88c99774d4c3db76..267032db0df14e46e79c33b2918f460842900db6 100644
--- a/Doku/thunderbird.tex
+++ b/Doku/thunderbird.tex
@@ -4,4 +4,6 @@
 Thunderbird ist dein Standardmailprogramm, damit kannst du beispielsweise deine RWTH-Mails abrufen.
 Eine Anleitung, wie du Thunderbird einrichtest findest du unter
 
-\scalebox{0.9}{\url{https://doc.itc.rwth-aachen.de/display/EML/Thunderbird+14+bis+Thunderbird+45}}
+\scalebox{0.9}{\url{https://help.itc.rwth-aachen.de/en/service/1jefzdccuvuch/article/614566f01671435d9f0e267e49aeae54/}}
+
+Inbesondere sollte darauf geachtet werden, dass Benutzername gegenüber dem server das Kürzel (z.B. \texttt{ab123456@rwth-aachen.de}), die E-Mail-Addresse hingegen der Name (z.B. \texttt{vorname.nachname@rwth-aachen.de} oder \texttt{vorname.nachname1@rwth-aachen.de} falls es den Namen schon gab). Wenn das Kürzel als e-Mail-Addresse genutzt wird, erlaubt der RWTH-Mailserver euch nicht Mails zu verschicken.
diff --git a/Doku/valgrind.tex b/Doku/valgrind.tex
index e3e9f9670b136a3f1de05b8421677d1794cb73cf..ac17097e3b5a83713323cfbc608969fdfbdbe11e 100644
--- a/Doku/valgrind.tex
+++ b/Doku/valgrind.tex
@@ -1,5 +1,6 @@
 \subsection{Valgrind}
 Valgrind ist ein Werkzeug zum Debuggen von compilierten Programmen, insbesondere von Speicherfehlern.
 Wenn man beispielsweise ein C oder C++-Programm geschrieben hat, kann man es mit Flags zum Debuggen (\texttt{-g} bei gcc und g++) kompilieren und danach mit \texttt{valgrind a.out} ausführen.
+Valgrind bietet darüber hinaus Auswertungswerkzeuge, die bei der Programmoptimierung helfen, wie das dynamic heap analysis tool DHAT\footnote{siehe \url{https://valgrind.org/docs/manual/dh-manual.html}}.
 
-Weitere Informationen findet man in der Manpage \texttt{man valgrind}.
+Weitere Informationen findet man in der Manpage \texttt{man valgrind} oder Online auf \url{https://valgrind.org/docs/manual/}.
diff --git a/scripts/linuxparty.sh b/scripts/linuxparty.sh
index 9d4b050e43f91b73944a8a1aec49b2cadc82b6fe..f8996ab669ad02afc164b248cfdb77a7d176e7d9 100755
--- a/scripts/linuxparty.sh
+++ b/scripts/linuxparty.sh
@@ -25,7 +25,7 @@ MY_DIR="$( readlink -f "$( dirname "${BASH_SOURCE[0]}" )" )"
 
 #images already installed
 # TODO: include libreoffice-common (for documentation)?
-PREINSTALLED_PKGS="thunderbird vlc kile"
+PREINSTALLED_PKGS="thunderbird firefox vlc kile"
 
 #APT_ARGS="--quiet -y --allow-unauthenticated"
 APT_ARGS="--quiet -y"