\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{Bronzeapollo}
\pdfinfo{
  /Title (csci-cheatsheet-tony.pdf)
  /Creator (Cheatography)
  /Author (Bronzeapollo)
  /Subject (CSCI CheatSheet Tony Cheat Sheet)
}

% Lengths and widths
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\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}{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{CSCI CheatSheet Tony Cheat Sheet}}}} \\
    \normalsize{by \textcolor{DarkBackground}{Bronzeapollo} via \textcolor{DarkBackground}{\uline{cheatography.com/89712/cs/20421/}}}
\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}Bronzeapollo \\
  \uline{cheatography.com/bronzeapollo} \\
  \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 22nd 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{2.23965 cm} x{2.73735 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{BERGH}}  \tn
% Row 0
\SetRowColor{LightBackground}
Sudo & You become Groot, I mean Root \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
Globbing & * any character any number of times  ? any one character one time -a get files -nr numaric sort \& reverse it -h human-readable .iname -Case-insensitive  -r recrusive \tn 
% Row Count 10 (+ 8)
% Row 2
\SetRowColor{LightBackground}
find & -finds files \tn 
% Row Count 11 (+ 1)
% Row 3
\SetRowColor{white}
mkdir & -makes directories \tn 
% Row Count 12 (+ 1)
% Row 4
\SetRowColor{LightBackground}
rmdir & - remove directories \tn 
% Row Count 13 (+ 1)
% Row 5
\SetRowColor{white}
\mymulticolumn{2}{x{5.377cm}}{stty sane} \tn 
% Row Count 14 (+ 1)
% Row 6
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{5.377cm}}{grep} \tn 
% Row Count 15 (+ 1)
% Row 7
\SetRowColor{white}
\mymulticolumn{2}{x{5.377cm}}{du} \tn 
% Row Count 16 (+ 1)
% Row 8
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{5.377cm}}{ls} \tn 
% Row Count 17 (+ 1)
% Row 9
\SetRowColor{white}
\mymulticolumn{2}{x{5.377cm}}{cd} \tn 
% Row Count 18 (+ 1)
% Row 10
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{5.377cm}}{sort} \tn 
% Row Count 19 (+ 1)
% Row 11
\SetRowColor{white}
\mymulticolumn{2}{x{5.377cm}}{head} \tn 
% Row Count 20 (+ 1)
% Row 12
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{5.377cm}}{tail} \tn 
% Row Count 21 (+ 1)
% Row 13
\SetRowColor{white}
dd if=/dev/urandom bs=100 count=1 & (One Random number) \tn 
% Row Count 23 (+ 2)
% Row 14
\SetRowColor{LightBackground}
Create Home Directory & /home/\textless{}userid\textgreater{}/ \tn 
% Row Count 25 (+ 2)
% Row 15
\SetRowColor{white}
 & chown \textless{}userid\textgreater{}(:group) /home/\textless{}userid\textgreater{}/ \tn 
% Row Count 27 (+ 2)
% Row 16
\SetRowColor{LightBackground}
 & chmod "Bunch of Crazy Numbers"/home/\textless{}userid\textgreater{} \tn 
% Row Count 30 (+ 3)
\end{tabularx}
\par\addvspace{1.3em}

\vfill
\columnbreak
\begin{tabularx}{5.377cm}{x{2.23965 cm} x{2.73735 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{BERGH (cont)}}  \tn
% Row 17
\SetRowColor{LightBackground}
Bunch of Crazy Numbers & 777  664 \tn 
% Row Count 2 (+ 2)
% Row 18
\SetRowColor{white}
 & 755 For Directories \tn 
% Row Count 3 (+ 1)
\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}{aa}}  \tn
% Row 0
\SetRowColor{LightBackground}
\seqsplit{firewall-cmd} & -{}-add-port -{}-add-service -{}-runtime-to-permanent \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
\mymulticolumn{2}{x{5.377cm}}{sudo su} \tn 
% Row Count 3 (+ 1)
% Row 2
\SetRowColor{LightBackground}
journalctl & -u (Service) \tn 
% Row Count 4 (+ 1)
% Row 3
\SetRowColor{white}
ping & -s \tn 
% Row Count 5 (+ 1)
% Row 4
\SetRowColor{LightBackground}
env & Lists all running environments \tn 
% Row Count 7 (+ 2)
% Row 5
\SetRowColor{white}
\mymulticolumn{2}{x{5.377cm}}{./file\_name.sh} \tn 
% Row Count 8 (+ 1)
% Row 6
\SetRowColor{LightBackground}
" " and ' ' & do different things in shell \tn 
% Row Count 10 (+ 2)
% Row 7
\SetRowColor{white}
echo & does it as a string \tn 
% Row Count 11 (+ 1)
% Row 8
\SetRowColor{LightBackground}
expr & does math \tn 
% Row Count 12 (+ 1)
% Row 9
\SetRowColor{white}
!/bin bash (old) -\textgreater{} & /bin/env bash (new) \tn 
% Row Count 14 (+ 2)
% Row 10
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{5.377cm}}{touch} \tn 
% Row Count 15 (+ 1)
% Row 11
\SetRowColor{white}
chmod & +x *.sh \tn 
% Row Count 16 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}


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

\end{document}