presentation.tex

\documentclass{beamer}
\usetheme[alternativetitlepage=true]{Torino}
\usepackage{listings}
\usepackage{hyperref}
\graphicspath{ {images/}}

\author{Scott Moser}
\title{Shell Script\^H\^H\^H\^H\^HProgramming Tips}
\institute{Michigan!/usr/group}
\date{June 9, 2014}

\begin{document}

\begin{frame}[t,plain]
    \titlepage
\end{frame}

\begin{frame}
   \frametitle{The Plan}
   \begin{itemize}
      \item Why Shell Programming?
      \item From Script to Program?
      \item Shell Script Tips
      \item questions
   \end{itemize}
\end{frame}

\begin{frame}
   \frametitle{Replace You}
   \includegraphics{replace-you}
\end{frame}

\begin{frame}
   \frametitle{Shell Programming?  What year is this!?}
   \begin{itemize}
      \item for I in perl python ruby python3; echo \$I replaced need for shell; done
      \item shell is cryptic, \$I is beautiful.
   \end{itemize}
\end{frame}

\begin{frame}
   \frametitle{Yes, Shell!}
   \begin{itemize}
      \item shell is *crazy fast* [scripts/bench-startup]
      \item even \href{https://gist.github.com/smoser/9780744}{/bin/bash is fast}.
      \item Ok, they're fast, but why do I care?
      \begin{itemize}
         \item your system load is 200, figure out why.
         \item tab completion
         \item boot time (hint, boot uses a lot of shell). 180 forks to init. 1059 to rc.local.
      \end{itemize}
   \end{itemize}
\end{frame}

\begin{frame}
   \frametitle{Why Else?}
   \begin{itemize}
      \item copy and pasteable
      \item /bin/sh actually *is* ubiquitus . openwrt, bsd, its just always there.
      \item sometimes its the only thing available.
      \item sometimes its actually the simplist thing.
   \end{itemize}
\end{frame}

\begin{frame}
   \frametitle{Shell Scripting to Shell Programming}
   \begin{itemize}
      \item functions and return values
      \item declare and initialize variables
      \item Usage
      \item set -f
      \item \href{https://github.com/smoser/talk-shell-script/blob/master/scripts/newscript}{newscript}
      \item getopt
      \item \href{https://github.com/smoser/talk-shell-script/blob/master/scripts/negative-logic}{negative-logic}
   \end{itemize}
\end{frame}

\begin{frame}
   \frametitle{Tips and tricks}
   \begin{itemize}
      \item Use "standard tools" (awk, sed, sh)
      \item \href{https://github.com/smoser/talk-shell-script/blob/master/scripts/cleanup}{cleanup}
      \item \$\{varname:+foo\} and \$\{varname:-foo\}
   \end{itemize}
\end{frame}

\begin{frame}
   \frametitle{Why bash?}
   \begin{itemize}
      \item \href{https://github.com/smoser/talk-shell-script/blob/master/scripts/arrays}{real arrays}
      \item \$\{HOME//e/ie\}
      \item hashes
      \item better trap
      \item \href{https://github.com/smoser/talk-shell-script/blob/master/scripts/}{\$BASH\_PIPESTATUS}
      \item \$RANDOM
      \item \$SECONDS
   \end{itemize}
\end{frame}

\end{document}