\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{ESPGranEdu}
\pdfinfo{
  /Title (shellscript.pdf)
  /Creator (Cheatography)
  /Author (ESPGranEdu)
  /Subject (ShellScript Cheat Sheet)
}

% Lengths and widths
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\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
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\definecolor{FootBackground}{HTML}{666666}
\definecolor{TextColor}{HTML}{333333}
\definecolor{DarkBackground}{HTML}{A3A3A3}
\definecolor{LightBackground}{HTML}{F3F3F3}
\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{ShellScript Cheat Sheet}}}} \\
    \normalsize{by \textcolor{DarkBackground}{ESPGranEdu} via \textcolor{DarkBackground}{\uline{cheatography.com/95808/cs/20773/}}}
\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}ESPGranEdu \\
  \uline{cheatography.com/espgranedu} \\
  \end{tabulary}
\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
  \SetRowColor{FootBackground}
  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Cheat Sheet}}  \\
   \vspace{-2pt}Published 14th October, 2019.\\
   Updated 14th October, 2019.\\
   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{multicols*}{3}

\begin{tabularx}{5.377cm}{x{2.04057 cm} x{2.93643 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Variables}}  \tn
% Row 0
\SetRowColor{LightBackground}
{\emph{var}}={\bf{valor}} & {\bf{No pueden}} contener espacios entre el símbolo {\bf{=}} \tn 
% Row Count 3 (+ 3)
% Row 1
\SetRowColor{white}
{\emph{variable=valor}} {\bf{comando}} & Exporta el valor de la variable al comando \tn 
% Row Count 5 (+ 2)
% Row 2
\SetRowColor{LightBackground}
{\bf{unset}} variable & Borra la variable \tn 
% Row Count 7 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{1.89126 cm} x{3.08574 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Expansiones}}  \tn
% Row 0
\SetRowColor{LightBackground}
{\bf{\$v1 / \$\{v1\}}} & Sustituye el valor de la variables {\bf{v1}} \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
{\bf{\$\{\#v1\}}} & Obtiene el {\bf{numero de caracteres}} de la variable {\bf{v1}} \tn 
% Row Count 5 (+ 3)
% Row 2
\SetRowColor{LightBackground}
{\bf{\$\{!v1\}}} & Indirección: {\bf{devuelve}} el valor de la var con nombre=valor en v1 \tn 
% Row Count 8 (+ 3)
% Row 3
\SetRowColor{white}
{\bf{\$\{v1:n\}}} & {\bf{Recorta}} v1 desde el carácter en la posición nhasta el final \tn 
% Row Count 11 (+ 3)
% Row 4
\SetRowColor{LightBackground}
{\bf{\$\{v1:n:m\}}} & {\bf{Recorta}} v1 desde el carácter en la posición n una longitud m caracteres \tn 
% Row Count 15 (+ 4)
% Row 5
\SetRowColor{white}
{\bf{\$\{v1//patrón/cadena\}}} & {\bf{Reemplaza}} en v1 todas las apariciones de patrón por cadena \tn 
% Row Count 18 (+ 3)
% Row 6
\SetRowColor{LightBackground}
{\bf{\$\{v1//patrón/\}}} & {\bf{Reemplaza}} en v1 todas las apariciones de patrón por cadena \tn 
% Row Count 21 (+ 3)
% Row 7
\SetRowColor{white}
{\bf{\$\{v1\textasciicircum{}\textasciicircum{}\}}} & Devuelve v1 en {\bf{mayúsculas}} \tn 
% Row Count 23 (+ 2)
% Row 8
\SetRowColor{LightBackground}
{\bf{\$\{v1,,\}}} & Devuelve v1 en {\bf{minúsuclas}} \tn 
% Row Count 25 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{1.59264 cm} x{3.38436 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Parámetros posicionales}}  \tn
% Row 0
\SetRowColor{LightBackground}
{\bf{\$0}} & Nombre del script con ruta incluida \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
{\bf{\$1 \$2 ... \$\{10\}}} & Acceso a parametros, a partir del {\bf{décimo}} parámetro se debe de acceder con \{\} para evitar errores \tn 
% Row Count 6 (+ 4)
% Row 2
\SetRowColor{LightBackground}
{\bf{"\$@"}} & Lista completa de parametros, respetando espacios \tn 
% Row Count 8 (+ 2)
% Row 3
\SetRowColor{white}
{\bf{\$\#}} & Numero de parámetros \tn 
% Row Count 9 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{1.64241 cm} x{3.33459 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Arrays}}  \tn
% Row 0
\SetRowColor{LightBackground}
{\bf{a=(v1 v2)}} & Crea el array {\bf{a}} y en las posiciones 0 y 1 se encuentran los valores {\bf{v1}} y {\bf{v2}} respectivamente \tn 
% Row Count 4 (+ 4)
% Row 1
\SetRowColor{white}
{\bf{b=("\$\{a{[}@{]}" v3)}} & Crea una array {\bf{b}} con los valores de {\bf{a}} y uno más al final \tn 
% Row Count 7 (+ 3)
% Row 2
\SetRowColor{LightBackground}
{\bf{a{[}0{]}=v1}} & Asigna {\bf{v1}} a la posicion 0 del array {\bf{a}} \tn 
% Row Count 9 (+ 2)
% Row 3
\SetRowColor{white}
{\bf{echo \$\{a{[}n{]}\}}} & Accede a la posicion {\bf{n}} del array {\bf{a}} \tn 
% Row Count 11 (+ 2)
% Row 4
\SetRowColor{LightBackground}
{\bf{echo \$\{!a{[}@{]}\}}} & Obtiene {\bf{todos los índices}} del array {\bf{a}} \tn 
% Row Count 13 (+ 2)
% Row 5
\SetRowColor{white}
{\bf{echo \$\{\#a{[}*{]}\}}} & Obtiene el {\bf{número de elementos}} del array {\bf{a}} \tn 
% Row Count 15 (+ 2)
% Row 6
\SetRowColor{LightBackground}
{\bf{echo \$\{\#a{[}3{]}\}}} & Obtiene el {\bf{número de caracteres}} del 4 elemento del array {\bf{a}} \tn 
% Row Count 18 (+ 3)
% Row 7
\SetRowColor{white}
{\bf{echo \$\{a{[}@{]}:n\}}} & Obtiene desde la {\bf{n-ésima posición}} hasta el final \tn 
% Row Count 21 (+ 3)
% Row 8
\SetRowColor{LightBackground}
{\bf{echo \$\{a{[}@{]}:n:m\}}} & Obtiene desde la{\bf{ n-ésima posición}} m posiciones \tn 
% Row Count 23 (+ 2)
% Row 9
\SetRowColor{white}
{\bf{declare -A array}} & Declara un {\bf{array asociativo}} \tn 
% Row Count 25 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}


% That's all folks
\end{multicols*}

\end{document}