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diff --git a/ult/ult_9/ult9.tex b/ult/ult_9/ult9.tex new file mode 100644 index 0000000..5201209 --- /dev/null +++ b/ult/ult_9/ult9.tex @@ -0,0 +1,221 @@ +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +% Using Linux Tools +% +% Author: FOSSEE +% Copyright (c) 2009, FOSSEE, IIT Bombay +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% + +\documentclass[17pt,compress]{beamer} +\usepackage{beamerthemesplit} +\mode<presentation> +{ + \usetheme{Warsaw} + \useoutertheme{infolines} + \setbeamercovered{transparent} + \setbeamertemplate{navigation symbols}{} +} +% Taken from Fernando's slides. +\usepackage{ae,aecompl} +\usepackage[scaled=.95]{helvet} + +\usepackage[english]{babel} +\usepackage[latin1]{inputenc} +\usepackage[T1]{fontenc} + +% change the alerted colour to LimeGreen +\definecolor{LimeGreen}{RGB}{50,205,50} +\setbeamercolor{structure}{fg=LimeGreen} +\author[FOSSEE]{} +\institute[IIT Bombay]{} +\date[]{} +% \setbeamercovered{transparent} + +% theme split +\usepackage{verbatim} +\newenvironment{colorverbatim}[1][]% +{% +\color{blue} +\verbatim +}% +{% +\endverbatim +}% + +\usepackage{mathpazo,courier,euler} +\usepackage{listings} +\lstset{language=sh, + basicstyle=\ttfamily\bfseries, + showstringspaces=false, + keywordstyle=\color{black}\bfseries} + +% logo +\logo{\includegraphics[height=1.30 cm]{../images/3t-logo.pdf}} +\logo{\includegraphics[height=1.30 cm]{../images/fossee-logo.pdf} + +\hspace{7.5cm} +\includegraphics[scale=0.99]{../images/fossee-logo.pdf}\\ +\hspace{281pt} +\includegraphics[scale=0.80]{../images/3t-logo.pdf}} +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +% DOCUMENT STARTS +\begin{document} + +\sffamily \bfseries +\title +[Control structures and Operators] +{Control structures and Operators} +\author +[FOSSEE] +{\small Talk to a Teacher\\{\color{blue}\url{http://spoken-tutorial.org}}\\\vspace{0.25cm}National Mission on Education + through ICT\\{\color{blue}\url{ http://sakshat.ac.in}} \\ [0.8cm] + Contributed by FOSSEE Team \\IIT Bombay \\[0.3cm] +} + +% slide 1 +\begin{frame} + \titlepage +\end{frame} + +\begin{frame} +\frametitle{Objectives} +\label{sec-2} + +At the end of this tutorial, you will be able to, +\begin{itemize} +\item Prepare scripts using `Control Operators' +\item Use Environment Variables +\end{itemize} +\end{frame} + +\begin{frame} +\frametitle{Pre-requisites} +\label{sec-3} + +Spoken tutorial on - +\begin{itemize} +\item Shell scripts \& Variables +\end{itemize} +\end{frame} + +\begin{frame}[fragile] + \frametitle{\texttt{if}} + \begin{itemize} + \item Print message if directory exists in \texttt{pwd} + \end{itemize} + \begin{lstlisting} + #!/bin/bash + if test -d $1 + then + echo "Yes, the directory" $1 + "is present" + fi + \end{lstlisting} % $ +\end{frame} + +\begin{frame}[fragile] + \frametitle{\texttt{[ ]} - alias for \texttt{test}} + \begin{itemize} + \item Square brackets (\texttt{[]}) instead of \texttt{test} + \end{itemize} + \begin{lstlisting} + #!/bin/bash + if [ $1 -lt 0 ] + then + echo "number is negative" + else + echo "number is non-negative" + fi + \end{lstlisting} % $ +\end{frame} + +\begin{frame}[fragile] + \frametitle{Exercise} +\begin{itemize} +\item Given a set of \texttt{.mp3} files, with names beginning with numbers + followed by text -- eg: \texttt{08 - Society.mp3} + +\begin{itemize} +\item Rename the files to have just the names +\item Replace any spaces in the name with hyphens +\end{itemize} +\end{itemize} +\end{frame} + +% \begin{itemize} +% \item Loop over the list of files +% \item Process the names, to get new names +% \item Rename the files +% \end{itemize} +%\end{frame} + +\begin{frame}[fragile] + \frametitle{Shell Variables vs. Environment variables} + %\texttt{Environment variables vs. Shell variables} +\begin{table} +\begin{tabular}{|l|l|} +\hline +Shell var. & Environment var.\\\hline +only current instance & valid for the whole\\ +of the shell & whole session\\\hline +UPPER CASE & lower case\\\hline +\end{tabular} +\end{table} +\end{frame} + +\begin{frame} +\frametitle{Summary} +\label{sec-8} + + In this tutorial, we have learnt to, + + +\begin{itemize} +\item Prepare scripts using control structures -- ``if'', ``if-else'', + ``for'' \& ``while'' +\item Use environment variables +\item Export variable to environment of all processes, using + ``export'' command +\end{itemize} +\end{frame} +\begin{frame}[fragile] +\frametitle{Evaluation} +\label{sec-9} + + +\begin{enumerate} +\item Print the text ``dog man'' in such a way that the prompt continues after +the text. +\vspace{8pt} +\item How can you add a new path variable ``\texttt{/myscripts}'' to \$PATH variable ? +\end{enumerate} +\end{frame} +\begin{frame} +\frametitle{Solutions} +\label{sec-10} + + +\begin{enumerate} +\item \$ echo -n dog man +\vspace{15pt} +\item \$export PATH=\$PATH://myscripts +\end{enumerate} +\end{frame} +\begin{frame} + + \begin{block}{} + \begin{center} + {\Large THANK YOU!} + \end{center} + \end{block} +\begin{block}{} + \begin{center} + For more Information, visit our website\\ + {\color{blue}\url{http://fossee.in/}} + \end{center} + \end{block} +\end{frame} + + +\end{document} + + |