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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
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% Document Info
\author{nhatlong0605}
\pdfinfo{
  /Title (rhcsa-module1-basicsystemmanagementtasks.pdf)
  /Creator (Cheatography)
  /Author (nhatlong0605)
  /Subject (RHCSA\_Module1\_BasicSystemManagementTasks Cheat Sheet)
}

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% Commands
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% Header and Footer
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\noindent
\begin{multicols}{3}
\begin{tabulary}{5.8cm}{C}
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    {\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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\begin{tabulary}{11cm}{L}
    \vspace{-2pt}\large{\bf{\textcolor{DarkBackground}{\textrm{RHCSA\_Module1\_BasicSystemManagementTasks Cheat Sheet}}}} \\
    \normalsize{by \textcolor{DarkBackground}{nhatlong0605} via \textcolor{DarkBackground}{\uline{cheatography.com/68292/cs/22331/}}}
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\noindent
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  \mymulticolumn{2}{p{5.377cm}}{\bf\textcolor{white}{Cheatographer}}  \\
  \vspace{-2pt}nhatlong0605 \\
  \uline{cheatography.com/nhatlong0605} \\
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\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
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  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Cheat Sheet}}  \\
   \vspace{-2pt}Not Yet Published.\\
   Updated 6th April, 2020.\\
   Page {\thepage} of \pageref{LastPage}.
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  Measure your website readability!\\
  www.readability-score.com
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\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{1.64241 cm} x{3.33459 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Essential Commands}}  \tn
% Row 0
\SetRowColor{LightBackground}
pwd & Show current working dir \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
whoami & Show current username \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
ls & List files in dir \tn 
% Row Count 3 (+ 1)
% Row 3
\SetRowColor{white}
ip addr show & Show current IP config \tn 
% Row Count 4 (+ 1)
% Row 4
\SetRowColor{LightBackground}
free -m & Show how much memory you have \tn 
% Row Count 6 (+ 2)
% Row 5
\SetRowColor{white}
df -h & Show available diskspace \tn 
% Row Count 7 (+ 1)
% Row 6
\SetRowColor{LightBackground}
cat /etc/hosts & Show contents of file \tn 
% Row Count 9 (+ 2)
% Row 7
\SetRowColor{white}
findmnt & Show mounted file system \tn 
% Row Count 10 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
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\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{p{0.54747 cm} x{4.42953 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Linux File System Hierarchy}}  \tn
% Row 0
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Note & Highly standardised, defined in FHS, maintained by Linux Foundation, starting point is root dir, other devices may be intergrated in FHS using mounts \tn 
% Row Count 5 (+ 5)
% Row 1
\SetRowColor{white}
/ & root dir, mounted on the name of device \tn 
% Row Count 7 (+ 2)
% Row 2
\SetRowColor{LightBackground}
/boot & Boot dir \tn 
% Row Count 9 (+ 2)
% Row 3
\SetRowColor{white}
/home & Home Dir \tn 
% Row Count 11 (+ 2)
% Row 4
\SetRowColor{LightBackground}
/var & Variables dir \tn 
% Row Count 12 (+ 1)
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% Row 0
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* & Any character \tn 
% Row Count 1 (+ 1)
% Row 1
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? & Only 1 character \tn 
% Row Count 2 (+ 1)
% Row 2
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{[}hm{]} & Either h or m \tn 
% Row Count 3 (+ 1)
% Row 3
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% Row Count 4 (+ 1)
% Row 4
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% Row Count 5 (+ 1)
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\{n\} & Exactly n times \tn 
% Row Count 20 (+ 1)
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% That's all folks
\end{multicols*}

\end{document}