Minor updates; added «system» chapter

bits/find_PWD.tex

@@ -0,0 +1,3 @@
+\begin{Verbatim}[]
+find "$PWD"
+\end{Verbatim}

chapters/ch03-files.tex

@@ -1,7 +1,27 @@
 \chapter{Files}
 
-\section{To Remove Part of a Filename from Multiple Files}
+\section{Remove Part of a Filename from Multiple Files}
 
-\lettrine{U}{se} the \texttt{mmv}\index{mmv} package to do this.
+\lettrine{S}{ome} applications can produce files that are similarly named, and for whatever reason, you want to remove the repetitive bits. You can use the \texttt{mmv}\index{mmv} package to do this. Assume you have a list of files that all start with ``foo'':
 
-\lettrine{T}{his} can also be accomplished by using the \textbf{rename}\index{rename} command.
+\begin{Verbatim}[]
+foo143.txt
+fooabi.txt
+foo38r.txt
+\end{Verbatim}
+
+\lettrine{T}{his} can also be accomplished by using the \textbf{rename}\index{rename} command.
+
+\section{Obtain a List of Files and their Paths}
+
+\lettrine{T}{he} \texttt{find} command has options to obtain this list. To obtain this list with the full path, use:
+
+\input{bits/find_PWD}
+
+To obtain this list with a relative path, use:
+
+\begin{Verbatim}[]
+find .
+\end{Verbatim}
+
+\ktcbox{Sometimes you need a list of files with their filepaths, and these tools will do that. Unfortunately, Linux does not have a way to put the file first, so the way to do this is to redirect \texttt{stdout} to a \texttt{.csv} file and manipulate the output in a spreadsheet.}

chapters/ch04-system.tex

@@ -0,0 +1,27 @@
+\chapter{Files}
+
+\section{Remove Part of a Filename from Multiple Files}
+
+\lettrine{S}{ome} applications can produce files that are similarly named, and for whatever reason, you want to remove the repetitive bits. You can use the \texttt{mmv}\index{mmv} package to do this. Assume you have a list of files that all start with ``foo'':
+
+\begin{Verbatim}[]
+foo143.txt
+fooabi.txt
+foo38r.txt
+\end{Verbatim}
+
+\lettrine{T}{his} can also be accomplished by using the \textbf{rename}\index{rename} command.
+
+\section{Obtain a List of Files and their Paths}
+
+\lettrine{T}{he} \texttt{find} command has options to obtain this list. To obtain this list with the full path, use:
+
+\input{bits/find_PWD}
+
+To obtain this list with a relative path, use:
+
+\begin{Verbatim}[]
+find .
+\end{Verbatim}
+
+\ktcbox{Sometimes you need a list of files with their filepaths, and these tools will do that. Unfortunately, Linux does not have a way to put the file first, so the way to do this is to redirect \texttt{stdout} to a \texttt{.csv} file and manipulate the output in a spreadsheet.}

parts/1-packages.tex

@@ -11,6 +11,7 @@
 \usepackage{float} % Allow floats in multicol environments
 \usepackage{tcolorbox}
 \usepackage{fancyvrb}
+\usepackage{sim-os-menus}
 %\usepackage{etoolbox}
 \usepackage{imakeidx}
 \usepackage{aurical} % Font for section titles