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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Using Linux Tools
%
% Author: FOSSEE
% Copyright (c) 2009, FOSSEE, IIT Bombay
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\documentclass[12pt,compress]{beamer}
\mode<presentation>
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\usepackage[english]{babel}
\usepackage[latin1]{inputenc}
%\usepackage{times}
\usepackage[T1]{fontenc}
% Taken from Fernando's slides.
\usepackage{ae,aecompl}
\usepackage{mathpazo,courier,euler}
\usepackage[scaled=.95]{helvet}
\definecolor{darkgreen}{rgb}{0,0.5,0}
\usepackage{listings}
\lstset{language=sh,
basicstyle=\ttfamily\bfseries,
commentstyle=\color{red}\itshape,
stringstyle=\color{darkgreen},
showstringspaces=false,
keywordstyle=\color{blue}\bfseries}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% DOCUMENT STARTS
\begin{document}
\begin{frame}
\begin{center}
\vspace{12pt}
\textcolor{blue}{\huge Using Linux Tools}
\end{center}
\vspace{18pt}
\begin{center}
\vspace{10pt}
\includegraphics[scale=0.95]{../images/fossee-logo.png}\\
\vspace{5pt}
\scriptsize Developed by FOSSEE Team, IIT-Bombay. \\
\scriptsize Funded by National Mission on Education through ICT\\
\scriptsize MHRD,Govt. of India\\
\includegraphics[scale=0.30]{../images/iitb-logo.png}\\
\end{center}
\end{frame}
\begin{frame}
\frametitle{Objectives}
\label{sec-2}
At the end of this tutorial, you will be able to,
\begin{itemize}
\item Search for files in many different ways.
\item Compare files with same names.
\item Create and extract an archive.
\item Customize a shell.
\end{itemize}
\end{frame}
\begin{frame}
\frametitle{Pre-requisite}
\label{sec-3}
Spoken tutorial on -
\begin{itemize}
\item Using Linux tools -- Part I
\item Using Linux tools -- Part II
\item Using Linux tools -- Part III
\item Using Linux tools -- Part IV
\item Using Linux tools -- Part V
\item Using Linux tools -- Part VI
\item Using Linux tools -- Part VII
\end{itemize}
\end{frame}
\begin{frame}[fragile]
\frametitle{\texttt{`find'}}
\begin{itemize}
\item `find' command helps to find files in a directory hierarchy
\item Offers a very complex feature set\\ For eg: search files by name, owner, date,etc.
\item Look at the \texttt{man} page of `find'
\end{itemize}
\end{frame}
\begin{frame}[fragile]
\frametitle{\texttt{`cmp'}}
\begin{itemize}
\item Compare two files
\end{itemize}
\begin{lstlisting}
$ find . -name quick.c
./Desktop/programs/quick.c
./c-folder/quick.c
$ cmp Desktop/programs/quick.c \
c-folder/quick.c
\end{lstlisting} % $
\begin{itemize}
\item No output when the files are exactly the same
\item Else, gives location where the first difference occurs
\end{itemize}
\end{frame}
\begin{frame}[fragile]
\frametitle{\texttt{`diff'}}
\begin{itemize}
\item We know the files are different, but want exact differences
\end{itemize}
\begin{lstlisting}
$ diff Desktop/programs/quick.c \
c-folder/quick.c
\end{lstlisting} % $
\begin{itemize}
\item line by line difference between files
\item \texttt{>} indicates content only in second file
\item \texttt{<} indicates content only in first file
\end{itemize}
\end{frame}
\begin{frame}[fragile]
\frametitle{\texttt{`tar'}}
\begin{itemize}
\item \emph{tarball} -- essentially a collection of files
\item May or may not be compressed
\item Eases the job of storing, backing-up \& transporting files
\end{itemize}
\end{frame}
\begin{frame}[fragile]
\frametitle{Extracting an archive}
\begin{lstlisting}
$ mkdir extract
$ cp allfiles.tar extract/
$ cd extract
$ tar -xvf allfiles.tar
\end{lstlisting} %$
\begin{itemize}
\item \texttt{-x} --- Extract files within the archive
\item \texttt{-f} --- Specify the archive file
\item \texttt{-v} --- Be verbose
\end{itemize}
\end{frame}
\begin{frame}[fragile]
\frametitle{Compressed archives}
\begin{itemize}
\item \texttt{tar} can create and extract compressed archives
\item Supports compressions like gzip, bzip2, lzma, etc.
\item Additional option to handle compressed archives
\begin{center}
\begin{tabular}{|l|l|}\hline
Compression & Option \\\hline
gzip & \texttt{-z} \\\hline
bzip2 & \texttt{-j} \\\hline
lzma & \texttt{-{}-lzma} \\\hline
\end{tabular}
\end{center}
\end{itemize}
\begin{lstlisting}
$ tar -cvzf newarchive.tar.gz *.txt
\end{lstlisting} % $
\end{frame}
\begin{frame}
\frametitle{Customizing your shell}
\begin{itemize}
\item Bash reads \texttt{/etc/profile},
\texttt{\textasciitilde{}/.bash\_profile},
\texttt{\textasciitilde{}/.bash\_login}, and
\texttt{\textasciitilde{}/.profile} in that order, when starting
up as a login shell.
\item \texttt{\textasciitilde{}/.bashrc} is read, when not a login
shell
\item Put any commands that you want to run when bash starts, in this
file.
\end{itemize}
\end{frame}
\begin{frame}
\frametitle{Summary}
\label{sec-8}
In this tutorial, we have learnt to,
\begin{itemize}
\item To make use of the ``find'' command find files in a directory hierarchy.
\item To find the differences between files with the same name, using the
``cmp'' and ``diff'' commands.
\item To extract and create compressed archive's using the ``tar'' command.
\item Customize one's shell according to one's choice.
\end{itemize}
\end{frame}
\begin{frame}[fragile]
\frametitle{Evaluation}
\label{sec-9}
\begin{enumerate}
\item Look at the man page of ``find'' and state the options which
deal with symbolic links.
\vspace{8pt}
\item How do you append tar files to an archive ?
\end{enumerate}
\end{frame}
\begin{frame}
\frametitle{Solutions}
\begin{enumerate}
\item -H, -L and -P options with the ``find'' command
\vspace{15pt}
\item tar -Af <tar\_file> <tar\_file\_to\_be\_added>
\end{enumerate}
\end{frame}
\begin{frame}
\begin{block}{}
\begin{center}
\textcolor{blue}{\Large THANK YOU!}
\end{center}
\end{block}
\begin{block}{}
\begin{center}
For more Information, visit our website\\
\url{http://fossee.in/}
\end{center}
\end{block}
\end{frame}
\end{document}
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