\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{daydreamli}
\pdfinfo{
  /Title (red-hat-certified-engineer-8.pdf)
  /Creator (Cheatography)
  /Author (daydreamli)
  /Subject (Red Hat Certified Engineer 8 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}{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{Red Hat Certified Engineer 8 Cheat Sheet}}}} \\
    \normalsize{by \textcolor{DarkBackground}{daydreamli} via \textcolor{DarkBackground}{\uline{cheatography.com/160721/cs/33763/}}}
\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}daydreamli \\
  \uline{cheatography.com/daydreamli} \\
  \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 21st August, 2022.\\
   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{2.28942 cm} x{2.68758 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{File \& Document Manage}}  \tn
% Row 0
\SetRowColor{LightBackground}
echo -n -e & use in shell script \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
date +"\%F \%H:\%M:\%S & show date and time \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
cat \textgreater{} \textgreater{}\textgreater{} file & Place or Add input into file \tn 
% Row Count 4 (+ 2)
% Row 3
\SetRowColor{white}
touch file & Create or Update File \tn 
% Row Count 5 (+ 1)
% Row 4
\SetRowColor{LightBackground}
ls -la/ld & Display all information about files/Directories \tn 
% Row Count 8 (+ 3)
% Row 5
\SetRowColor{white}
mkdir -p directory-name & Create directory by \tn 
% Row Count 10 (+ 2)
% Row 6
\SetRowColor{LightBackground}
rm -rf file/directory & Forcefully remoce file/Directory \tn 
% Row Count 12 (+ 2)
% Row 7
\SetRowColor{white}
rmdir & Delete empty directory \tn 
% Row Count 14 (+ 2)
% Row 8
\SetRowColor{LightBackground}
cp file1 file2 localpath & copy file1\&file2 to path \tn 
% Row Count 16 (+ 2)
% Row 9
\SetRowColor{white}
cp/mv file1 file2 & copy/mv file to file2 \tn 
% Row Count 17 (+ 1)
% Row 10
\SetRowColor{LightBackground}
cp -r dir1 dir2 & copy dir1 to dir2,create dir2 if it doesn't exist \tn 
% Row Count 20 (+ 3)
% Row 11
\SetRowColor{white}
head tail more less file & Output contents of file \tn 
% Row Count 22 (+ 2)
% Row 12
\SetRowColor{LightBackground}
tail -f file & Output contents of file as it grows starting with the last 10 lines;usual use in check for logs \tn 
% Row Count 27 (+ 5)
% Row 13
\SetRowColor{white}
\textgreater{};\textgreater{}\textgreater{};\textless{};\textless{}\textless{};\&\textgreater{};\&\textgreater{}\textgreater{} & input \& output redirect \tn 
% Row Count 29 (+ 2)
% Row 14
\SetRowColor{LightBackground}
{[}{]};*;'';\textbackslash{} & match a single character in a range;Matches any number of characters;make char diable the meaning. \tn 
% Row Count 34 (+ 5)
\end{tabularx}
\par\addvspace{1.3em}

\vfill
\columnbreak
\begin{tabularx}{5.377cm}{x{2.28942 cm} x{2.68758 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{File \& Document Manage (cont)}}  \tn
% Row 15
\SetRowColor{LightBackground}
|；|grep & pipe ,on the left command output \& right get the output into input \tn 
% Row Count 4 (+ 4)
% Row 16
\SetRowColor{white}
find path -name/size name/+100000K & find files by name or gt 100M \tn 
% Row Count 6 (+ 2)
% Row 17
\SetRowColor{LightBackground}
grep;egrep pay file ；-e/i/v/n & Search for pay in files;command options \tn 
% Row Count 8 (+ 2)
% Row 18
\SetRowColor{white}
xargs & Excute command lines from standard input. \tn 
% Row Count 10 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{2.33919 cm} x{2.63781 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{vim edit}}  \tn
% Row 0
\SetRowColor{LightBackground}
hjkl & turn left/up/down/right \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
gg & go to head of line \tn 
% Row Count 3 (+ 1)
% Row 2
\SetRowColor{LightBackground}
G & go to last line \tn 
% Row Count 4 (+ 1)
% Row 3
\SetRowColor{white}
nG & go to N line \tn 
% Row Count 5 (+ 1)
% Row 4
\SetRowColor{LightBackground}
x & delete letter of the cursor \tn 
% Row Count 7 (+ 2)
% Row 5
\SetRowColor{white}
X & delete letter  left of the cursor \tn 
% Row Count 9 (+ 2)
% Row 6
\SetRowColor{LightBackground}
u & undo；initializing when hold on it \tn 
% Row Count 11 (+ 2)
% Row 7
\SetRowColor{white}
dd & delete the line of the cursor;ndd:delete the n line under the cursor(includle the line of sursor) \tn 
% Row Count 16 (+ 5)
% Row 8
\SetRowColor{LightBackground}
yy & copy the line of the cursor,nyy similar ndd \tn 
% Row Count 19 (+ 3)
% Row 9
\SetRowColor{white}
P/p & add the content of  "dd/yy"  above/under the cursor \tn 
% Row Count 22 (+ 3)
% Row 10
\SetRowColor{LightBackground}
i/I & insert on the left/head of the line \tn 
% Row Count 24 (+ 2)
% Row 11
\SetRowColor{white}
a/A & insert on the right/the end of the line \tn 
% Row Count 26 (+ 2)
% Row 12
\SetRowColor{LightBackground}
o/O & add the new line under/above line of sursor \tn 
% Row Count 29 (+ 3)
% Row 13
\SetRowColor{white}
:wq/w/q/q!/wq!;:set nu/nonu & module of the end \seqsplit{line;save\&quit/save/quit/force} save\&quit/display line numer;undo display the line number \tn 
% Row Count 35 (+ 6)
\end{tabularx}
\par\addvspace{1.3em}

\vfill
\columnbreak
\begin{tabularx}{5.377cm}{x{2.33919 cm} x{2.63781 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{vim edit (cont)}}  \tn
% Row 14
\SetRowColor{LightBackground}
/content & search content of the file;n search next;N search previous \tn 
% Row Count 3 (+ 3)
% Row 15
\SetRowColor{white}
:n1,n2s/oldcontent/newcontent/golbal & replace content;:1,\$s/oldcontent/newcontent/g \tn 
% Row Count 6 (+ 3)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}


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

\end{document}