\documentclass[10pt,a4paper]{article}

% Packages
\usepackage{fancyhdr}           % For header and footer
\usepackage{multicol}           % Allows multicols in tables
\usepackage{tabularx}           % Intelligent column widths
\usepackage{tabulary}           % Used in header and footer
\usepackage{hhline}             % Border under tables
\usepackage{graphicx}           % For images
\usepackage{xcolor}             % For hex colours
%\usepackage[utf8x]{inputenc}    % For unicode character support
\usepackage[T1]{fontenc}        % Without this we get weird character replacements
\usepackage{colortbl}           % For coloured tables
\usepackage{setspace}           % For line height
\usepackage{lastpage}           % Needed for total page number
\usepackage{seqsplit}           % Splits long words.
%\usepackage{opensans}          % Can't make this work so far. Shame. Would be lovely.
\usepackage[normalem]{ulem}     % For underlining links
% Most of the following are not required for the majority
% of cheat sheets but are needed for some symbol support.
\usepackage{amsmath}            % Symbols
\usepackage{MnSymbol}           % Symbols
\usepackage{wasysym}            % Symbols
%\usepackage[english,german,french,spanish,italian]{babel}              % Languages

% Document Info
\author{TME520 (TME520)}
\pdfinfo{
  /Title (grep-english.pdf)
  /Creator (Cheatography)
  /Author (TME520 (TME520))
  /Subject (grep (english) Cheat Sheet)
}

% Lengths and widths
\addtolength{\textwidth}{6cm}
\addtolength{\textheight}{-1cm}
\addtolength{\hoffset}{-3cm}
\addtolength{\voffset}{-2cm}
\setlength{\tabcolsep}{0.2cm} % Space between columns
\setlength{\headsep}{-12pt} % Reduce space between header and content
\setlength{\headheight}{85pt} % If less, LaTeX automatically increases it
\renewcommand{\footrulewidth}{0pt} % Remove footer line
\renewcommand{\headrulewidth}{0pt} % Remove header line
\renewcommand{\seqinsert}{\ifmmode\allowbreak\else\-\fi} % Hyphens in seqsplit
% This two commands together give roughly
% the right line height in the tables
\renewcommand{\arraystretch}{1.3}
\onehalfspacing

% Commands
\newcommand{\SetRowColor}[1]{\noalign{\gdef\RowColorName{#1}}\rowcolor{\RowColorName}} % Shortcut for row colour
\newcommand{\mymulticolumn}[3]{\multicolumn{#1}{>{\columncolor{\RowColorName}}#2}{#3}} % For coloured multi-cols
\newcolumntype{x}[1]{>{\raggedright}p{#1}} % New column types for ragged-right paragraph columns
\newcommand{\tn}{\tabularnewline} % Required as custom column type in use

% Font and Colours
\definecolor{HeadBackground}{HTML}{333333}
\definecolor{FootBackground}{HTML}{666666}
\definecolor{TextColor}{HTML}{333333}
\definecolor{DarkBackground}{HTML}{A35B95}
\definecolor{LightBackground}{HTML}{F9F4F8}
\renewcommand{\familydefault}{\sfdefault}
\color{TextColor}

% Header and Footer
\pagestyle{fancy}
\fancyhead{} % Set header to blank
\fancyfoot{} % Set footer to blank
\fancyhead[L]{
\noindent
\begin{multicols}{3}
\begin{tabulary}{5.8cm}{C}
    \SetRowColor{DarkBackground}
    \vspace{-7pt}
    {\parbox{\dimexpr\textwidth-2\fboxsep\relax}{\noindent
        \hspace*{-6pt}\includegraphics[width=5.8cm]{/web/www.cheatography.com/public/images/cheatography_logo.pdf}}
    }
\end{tabulary}
\columnbreak
\begin{tabulary}{11cm}{L}
    \vspace{-2pt}\large{\bf{\textcolor{DarkBackground}{\textrm{grep (english) Cheat Sheet}}}} \\
    \normalsize{by \textcolor{DarkBackground}{TME520 (TME520)} via \textcolor{DarkBackground}{\uline{cheatography.com/20978/cs/4065/}}}
\end{tabulary}
\end{multicols}}

\fancyfoot[L]{ \footnotesize
\noindent
\begin{multicols}{3}
\begin{tabulary}{5.8cm}{LL}
  \SetRowColor{FootBackground}
  \mymulticolumn{2}{p{5.377cm}}{\bf\textcolor{white}{Cheatographer}}  \\
  \vspace{-2pt}TME520 (TME520) \\
  \uline{cheatography.com/tme520} \\
        \uline{\seqsplit{tme520}.com}
  \end{tabulary}
\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
  \SetRowColor{FootBackground}
  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Cheat Sheet}}  \\
   \vspace{-2pt}Published 4th May, 2015.\\
   Updated 25th February, 2020.\\
   Page {\thepage} of \pageref{LastPage}.
\end{tabulary}
\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
  \SetRowColor{FootBackground}
  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Sponsor}}  \\
  \SetRowColor{white}
  \vspace{-5pt}
  %\includegraphics[width=48px,height=48px]{dave.jpeg}
  Measure your website readability!\\
  www.readability-score.com
\end{tabulary}
\end{multicols}}




\begin{document}
\raggedright
\raggedcolumns

% Set font size to small. Switch to any value
% from this page to resize cheat sheet text:
% www.emerson.emory.edu/services/latex/latex_169.html
\footnotesize % Small font.


\begin{tabularx}{17.67cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{17.67cm}}{\bf\textcolor{white}{Usage}}  \tn
% Row 0
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{17.67cm}}{{\bf{Grep standard output (i.e. a stream of text)}}} \tn 
\mymulticolumn{1}{x{17.67cm}}{\hspace*{6 px}\rule{2px}{6px}\hspace*{6 px}grep {[}{\emph{-options}}{]} {\emph{'string'}}} \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
\mymulticolumn{1}{x{17.67cm}}{{\bf{Grep the content of a file}}} \tn 
\mymulticolumn{1}{x{17.67cm}}{\hspace*{6 px}\rule{2px}{6px}\hspace*{6 px}grep {[}{\emph{-options}}{]} {\emph{'string'}} {\emph{filename}}} \tn 
% Row Count 4 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{17.67cm}}{Wildcards are accepted in {\emph{filename}}.}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{17.67cm}{x{7.5915 cm} x{1.8557 cm} x{7.4228 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{3}{x{17.67cm}}{\bf\textcolor{white}{General Regular Expression Processor}}  \tn
% Row 0
\SetRowColor{LightBackground}
{\bf{Operation}} & {\bf{Option}} & {\bf{Example}} \tn 
% Row Count 3 (+ 3)
% Row 1
\SetRowColor{white}
{\bf{Find a string in 1 or more files}} &  & grep 'string' filename1 filename2 ... filename{\emph{n}} \tn 
% Row Count 6 (+ 3)
% Row 2
\SetRowColor{LightBackground}
{\bf{Case insensitive search}} & i & grep -i 'string' filename \tn 
% Row Count 8 (+ 2)
% Row 3
\SetRowColor{white}
{\bf{Use regular expressions (regex)}} &  & grep 'regex' filename \tn 
% Row Count 10 (+ 2)
% Row 4
\SetRowColor{LightBackground}
{\bf{Look for words}} & w & grep -w 'word' filename \tn 
% Row Count 12 (+ 2)
% Row 5
\SetRowColor{white}
{\bf{Display {\emph{n}} lines after matching string}} & A & grep -A n 'string' filename \tn 
% Row Count 15 (+ 3)
% Row 6
\SetRowColor{LightBackground}
{\bf{Display {\emph{n}} lines before matching string}} & B & grep -B n 'string' filename \tn 
% Row Count 18 (+ 3)
% Row 7
\SetRowColor{white}
{\bf{Display {\emph{n}} lines around matching string}} & C & grep -C n 'string' filename \tn 
% Row Count 21 (+ 3)
% Row 8
\SetRowColor{LightBackground}
{\bf{Recursive grep}} & r & grep -r \seqsplit{'hackers-club.cn'} \seqsplit{/var/log/apache2/archives/} \tn 
% Row Count 25 (+ 4)
% Row 9
\SetRowColor{white}
{\bf{Return all lines which don't match the pattern}} & v & grep -v 'warning' /var/log/syslog \tn 
% Row Count 28 (+ 3)
% Row 10
\SetRowColor{LightBackground}
{\bf{Use regex}} & e & grep -e 'string1' -e 'string2' filename \tn 
% Row Count 31 (+ 3)
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{17.67cm}{x{7.5915 cm} x{1.8557 cm} x{7.4228 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{3}{x{17.67cm}}{\bf\textcolor{white}{General Regular Expression Processor (cont)}}  \tn
% Row 11
\SetRowColor{LightBackground}
 &  & grep -{}-regexp 'string' filename \tn 
% Row Count 2 (+ 2)
% Row 12
\SetRowColor{white}
{\bf{Return lines starting with 'al'}} &  & grep -e '\textasciicircum{}al' filename \tn 
% Row Count 4 (+ 2)
% Row 13
\SetRowColor{LightBackground}
{\bf{Use extended regex}} & E & grep -E \seqsplit{'apache|wheel|root'} filename \tn 
% Row Count 7 (+ 3)
% Row 14
\SetRowColor{white}
{\bf{Get lines containing 1+ w}} &  & grep -E 'w+' filename \tn 
% Row Count 9 (+ 2)
% Row 15
\SetRowColor{LightBackground}
{\bf{Get lines with 3 w in a row (www)}} &  & grep -E 'w\{3\}' filename \tn 
% Row Count 12 (+ 3)
% Row 16
\SetRowColor{white}
{\bf{Get lines containing between 3 and 6 m in a row}} &  & grep -E 'm\{3,6\}' filename \tn 
% Row Count 15 (+ 3)
% Row 17
\SetRowColor{LightBackground}
{\bf{Get lines containing jason or jackson}} &  & grep -E 'ja(s|cks)on' filename \tn 
% Row Count 18 (+ 3)
% Row 18
\SetRowColor{white}
{\bf{Count results}} & c & grep -c 'error' /var/log/syslog \tn 
% Row Count 20 (+ 2)
% Row 19
\SetRowColor{LightBackground}
{\bf{Display filename}} & l & grep -l 'string' /var/log/* \tn 
% Row Count 22 (+ 2)
% Row 20
\SetRowColor{white}
{\bf{Only show the matching part of the string}} & o & grep -o 'string' filename \tn 
% Row Count 25 (+ 3)
% Row 21
\SetRowColor{LightBackground}
{\bf{Show line number}} & n & grep -n 'string' filename \tn 
% Row Count 27 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}---}
\SetRowColor{LightBackground}
\mymulticolumn{3}{x{17.67cm}}{{\bf{About grep -E}}: In basic regular expressions the meta-characters '?', '+', '\{', '|', '(', and ')' lose their special meaning; instead use the backslashed versions '\textbackslash{}?', '\textbackslash{}+', '\textbackslash{}\{', '\textbackslash{}|', '\textbackslash{}(', and '\textbackslash{})'. \newline  \newline GNU grep -E emulates classic meta-characters. The command 'grep -E '\{1'' searches for the 2-character string '\{1' instead of reporting an error. POSIX allows this behavior as an extension, but portable scripts should avoid it.}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}---}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{17.67cm}{x{5.5264 cm} x{11.7436 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{17.67cm}}{\bf\textcolor{white}{Regular expressions : wildcards}}  \tn
% Row 0
\SetRowColor{LightBackground}
{\bf{.}} & Any character. \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
{\bf{?}} & Optional and can only occur once. \tn 
% Row Count 3 (+ 2)
% Row 2
\SetRowColor{LightBackground}
{\bf{*}} & Optional and can occur more than once. \tn 
% Row Count 5 (+ 2)
% Row 3
\SetRowColor{white}
\{\{bb\}\}{\bf{+}} & \{\{bb\}\}Required and can occur more than once. \tn 
% Row Count 7 (+ 2)
% Row 4
\SetRowColor{LightBackground}
{\bf{\{n\}}} & Previous item appears exactly {\emph{n}} times. \tn 
% Row Count 9 (+ 2)
% Row 5
\SetRowColor{white}
{\bf{\{n,\}}} & Previous item appears {\emph{n}} times or more. \tn 
% Row Count 11 (+ 2)
% Row 6
\SetRowColor{LightBackground}
{\bf{\{,m\}}} & Previous item appears {\emph{n}} times maximum. \tn 
% Row Count 13 (+ 2)
% Row 7
\SetRowColor{white}
\{\{bb\}\}{\bf{\{n,m\}}} & \{\{bb\}\}Previous item appears between {\emph{n}} and {\emph{m}} times. \tn 
% Row Count 15 (+ 2)
% Row 8
\SetRowColor{LightBackground}
{\bf{{[}:alpha:{]}}} & Any lower and upper case letter. \tn 
% Row Count 17 (+ 2)
% Row 9
\SetRowColor{white}
{\bf{{[}:digit:{]}}} & Any number. \tn 
% Row Count 19 (+ 2)
% Row 10
\SetRowColor{LightBackground}
{\bf{{[}:alnum:{]}}} & Any lower and upper case letter or digit. \tn 
% Row Count 21 (+ 2)
% Row 11
\SetRowColor{white}
\{\{bb\}\}{\bf{{[}:space:{]}}} & \{\{bb\}\}Any whitespace. \tn 
% Row Count 23 (+ 2)
% Row 12
\SetRowColor{LightBackground}
{\bf{{[}A-Za-z{]}}} & Any lower and upper case letter. \tn 
% Row Count 25 (+ 2)
% Row 13
\SetRowColor{white}
{\bf{{[}0-9{]}}} & Any number. \tn 
% Row Count 26 (+ 1)
% Row 14
\SetRowColor{LightBackground}
{\bf{{[}0-9A-Za-z{]}}} & Any lower and upper case letter or digit. \tn 
% Row Count 28 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{17.67cm}{p{1.687 cm} x{4.7236 cm} x{10.4594 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{3}{x{17.67cm}}{\bf\textcolor{white}{Regular expressions : anchors and positions}}  \tn
% Row 0
\SetRowColor{LightBackground}
{\bf{\textasciicircum{}}} & Beginning of line. & grep '\textasciicircum{}Once upon a time' \seqsplit{/home/livres/lovestory.txt} \tn 
% Row Count 3 (+ 3)
% Row 1
\SetRowColor{white}
{\bf{\$}} & End of line. & grep 'divorced.\$' \seqsplit{/home/livres/lovestory.txt} \tn 
% Row Count 6 (+ 3)
% Row 2
\SetRowColor{LightBackground}
{\bf{\textasciicircum{}\$}} & Empty line. &  \tn 
% Row Count 8 (+ 2)
% Row 3
\SetRowColor{white}
{\bf{\textbackslash{}\textless{}}} & Start of word. & grep '\textbackslash{}\textless{}love\textbackslash{}\textgreater{}' /home/manga/seinen.txt \tn 
% Row Count 10 (+ 2)
% Row 4
\SetRowColor{LightBackground}
{\bf{\textbackslash{}\textgreater{}}} & End of word. &  \tn 
% Row Count 12 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}---}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{17.67cm}{p{1.727 cm} x{15.543 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{17.67cm}}{\bf\textcolor{white}{Characters to escape}}  \tn
% Row 0
\SetRowColor{LightBackground}
\textbackslash{} & . \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
{[} & \textasciicircum{} \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
\$ & ' \tn 
% Row Count 3 (+ 1)
% Row 3
\SetRowColor{white}
* & - (start of line only) \tn 
% Row Count 4 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}



\end{document}