\documentclass[10pt,a4paper]{article}

% Packages
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%\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{Jens Preu{\ss}ner (Jenzopr)}
\pdfinfo{
  /Title (bash-parameter-expansion.pdf)
  /Creator (Cheatography)
  /Author (Jens Preu{\ss}ner (Jenzopr))
  /Subject (Bash parameter expansion Cheat Sheet)
}

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% Commands
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% Header and Footer
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\fancyhead{} % Set header to blank
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\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}}
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\columnbreak
\begin{tabulary}{11cm}{L}
    \vspace{-2pt}\large{\bf{\textcolor{DarkBackground}{\textrm{Bash parameter expansion Cheat Sheet}}}} \\
    \normalsize{by \textcolor{DarkBackground}{Jens Preu{\ss}ner (Jenzopr)} via \textcolor{DarkBackground}{\uline{cheatography.com/18621/cs/2387/}}}
\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}Jens Preu{\ss}ner (Jenzopr) \\
  \uline{cheatography.com/jenzopr} \\
  \end{tabulary}
\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
  \SetRowColor{FootBackground}
  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Cheat Sheet}}  \\
   \vspace{-2pt}Not Yet Published.\\
   Updated 12th May, 2016.\\
   Page {\thepage} of \pageref{LastPage}.
\end{tabulary}
\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
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  \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}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Basic parameter usage}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{FRUIT="kiwi" \newline FRUITS=(oranges apples bananas) \newline echo "Today we offer \$FRUITs. Maybe you like some \$\{FRUIT\}s? We also have \$\{FRUITS{[}*{]}\}."} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{Today we offer . Maybe you like some kiwis? We also have oranges apples bananas.}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Parameter indirection}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{kiwi=5 \newline fruit="kiwi" \newline echo "A \$\{fruit\} costs \$\{!fruit\} coins."} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{A kiwi costs 5 coins.}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Case modification}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{boy="john" \newline girl="mARY" \newline echo "The boys name is \$\{boy\}, properly written as \$\{boy\textasciicircum{}\}. The girl is \$\{girl,,\}, but I prefer \$\{girl\textasciitilde{}\textasciitilde{}\}."} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{The boys name is john, properly written as John. The girl is mary, but I prefer Mary.}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{1.44333 cm} x{3.53367 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Substring removal}}  \tn
% Row 0
\SetRowColor{LightBackground}
\$\{VAR\#P\} & Remove pattern P from start \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
\$\{VAR\%P\} & Remove pattern P from end \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
FILE & text\_file.txt \tn 
% Row Count 3 (+ 1)
% Row 3
\SetRowColor{white}
\$\{FILE\%.*\} & text\_file \tn 
% Row Count 4 (+ 1)
% Row 4
\SetRowColor{LightBackground}
\$\{FILE\#\#.*\} & txt \tn 
% Row Count 5 (+ 1)
% Row 5
\SetRowColor{white}
DIR & /a/b/c.txt \tn 
% Row Count 6 (+ 1)
% Row 6
\SetRowColor{LightBackground}
\$\{DIR\%/*\} & /a/b \tn 
% Row Count 7 (+ 1)
% Row 7
\SetRowColor{white}
\$\{DIR\#\#*/\} & c.txt \tn 
% Row Count 8 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{5.377cm}}{When working on arrays, expansion will handle each element separately.}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{1.24425 cm} x{3.73275 cm} }
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\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Search and Replace}}  \tn
% Row 0
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\$\{VAR/P/R\} & Replace pattern P with R (1st occurence) \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
\$\{VAR//P/R\} & Replace pattern P with R (all occurences) \tn 
% Row Count 4 (+ 2)
% Row 2
\SetRowColor{LightBackground}
A & "Dynamos can explode" \tn 
% Row Count 5 (+ 1)
% Row 3
\SetRowColor{white}
\$\{A/mos/mite\} & "Dynamite can explode" \tn 
% Row Count 7 (+ 2)
% Row 4
\SetRowColor{LightBackground}
B & "XXX" \tn 
% Row Count 8 (+ 1)
% Row 5
\SetRowColor{white}
\$\{B/\#X/Y\} & "YXX" \tn 
% Row Count 9 (+ 1)
% Row 6
\SetRowColor{LightBackground}
\$\{B/\%X/Y\} & "XXY" \tn 
% Row Count 10 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
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\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{1.19448 cm} x{3.78252 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{String and arry length}}  \tn
% Row 0
\SetRowColor{LightBackground}
\$\{\#PARAM\} & length of \$PARAM \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
\$\{\#ARR{[}1{]}\} & length of 2\textasciicircum{}nd\textasciicircum{} element in \$ARR \tn 
% Row Count 3 (+ 2)
% Row 2
\SetRowColor{LightBackground}
\$\{\#ARR{[}@{]}\} & number of elements in \$ARR \tn 
% Row Count 5 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{5.377cm}}{Caution: The number of elements in an array may not reflect its highest index!}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{1.34379 cm} x{3.63321 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Substrings}}  \tn
% Row 0
\SetRowColor{LightBackground}
T & A day without sunshine is like, you know, night. \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
\$\{T:OFS\} & {\emph{OFS is the position to start}} \tn 
% Row Count 4 (+ 2)
% Row 2
\SetRowColor{LightBackground}
\$\{T:32\} & you know, night. \tn 
% Row Count 5 (+ 1)
% Row 3
\SetRowColor{white}
\$\{T:(-6)\} & night. \tn 
% Row Count 6 (+ 1)
% Row 4
\SetRowColor{LightBackground}
\$\{T:OFS:L\} & {\emph{L is an optional length}} \tn 
% Row Count 7 (+ 1)
% Row 5
\SetRowColor{white}
\$\{T:14:9\} & sunshine \tn 
% Row Count 8 (+ 1)
% Row 6
\SetRowColor{LightBackground}
\$\{T:(-6):5\} & night \tn 
% Row Count 10 (+ 2)
% Row 7
\SetRowColor{white}
ARR & (This is a text) \tn 
% Row Count 11 (+ 1)
% Row 8
\SetRowColor{LightBackground}
\$\{ARR{[}0{]}:2:2\} & is \tn 
% Row Count 13 (+ 2)
% Row 9
\SetRowColor{white}
\$\{array{[}@{]}:1:2\} & is a \tn 
% Row Count 15 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Default values}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}


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

\end{document}