\documentclass[10pt,a4paper]{article}

% Packages
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\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
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\usepackage{colortbl}           % For coloured tables
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\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{culebrinoo}
\pdfinfo{
  /Title (linux-cheatsheet.pdf)
  /Creator (Cheatography)
  /Author (culebrinoo)
  /Subject (Linux cheatsheet Cheat Sheet)
}

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\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
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% 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{Linux cheatsheet Cheat Sheet}}}} \\
    \normalsize{by \textcolor{DarkBackground}{culebrinoo} via \textcolor{DarkBackground}{\uline{cheatography.com/122227/cs/22624/}}}
\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}culebrinoo \\
  \uline{cheatography.com/culebrinoo} \\
  \end{tabulary}
\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
  \SetRowColor{FootBackground}
  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Cheat Sheet}}  \\
   \vspace{-2pt}Published 4th May, 2020.\\
   Updated 4th May, 2020.\\
   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{3.43413 cm} x{1.54287 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Expansion}}  \tn
% Row 0
\SetRowColor{LightBackground}
`ls {\bf{\$(}}which cp{\bf{)}}`\{\{nl\}\}`ls {\bf{\textbackslash{}`}}which cp{\bf{\textbackslash{}`}}` & Command expansion \tn 
% Row Count 3 (+ 3)
% Row 1
\SetRowColor{white}
`mkdir \{2017...2020\}-\{01-12\}` & Brace expansion \tn 
% Row Count 5 (+ 2)
% Row 2
\SetRowColor{LightBackground}
`echo text \textasciitilde{}/*.txt \{a,b\} \$USER` & Variable expansion \tn 
% Row Count 7 (+ 2)
% Row 3
\SetRowColor{white}
`echo "text \textasciitilde{}/*.txt \{a,b\} \$USER"` & " expansion \tn 
% Row Count 9 (+ 2)
% Row 4
\SetRowColor{LightBackground}
`echo 'text \textasciitilde{}/*.txt \{a,b\} \$USER'` & ' expansion (NONE) \tn 
% Row Count 11 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{3.03597 cm} x{1.94103 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Redirection \& Commands}}  \tn
% Row 0
\SetRowColor{LightBackground}
`ls {\bf{\textgreater{}}} file.txt` & Standard Out \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
`ls {\bf{2\textgreater{}}} file.txt` & Standard Error \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
`ls {\bf{\textgreater{}}} file.txt {\bf{2\textgreater{}\&1}}`\{\{nl\}\}`ls {\bf{\&\textgreater{}}} file.txt` & Standard Out \& Error \tn 
% Row Count 5 (+ 3)
% Row 3
\SetRowColor{white}
`ls | {\bf{tee}} file | wc -l` & Read stdin \& writes stdout \tn 
% Row Count 7 (+ 2)
% Row 4
\SetRowColor{LightBackground}
`cmd1 ; cmd2` & Run cmd1 then cmd2 \tn 
% Row Count 9 (+ 2)
% Row 5
\SetRowColor{white}
`cmd1 \&\& cmd2` & Run cmd2 if cmd1 is OK \tn 
% Row Count 11 (+ 2)
% Row 6
\SetRowColor{LightBackground}
`cmd1 || cmd2` & Run cmd2 if cmd1 is KO \tn 
% Row Count 13 (+ 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}{su / sudo}}  \tn
% Row 0
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{`su {[}-{[}l{]}{]} {[}user{]}`} \tn 
\mymulticolumn{1}{x{5.377cm}}{\hspace*{6 px}\rule{2px}{6px}\hspace*{6 px}Become another user, `ROOT` by default.  If `-` or `-l`, load user envs and working dir.} \tn 
% Row Count 3 (+ 3)
% Row 1
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{`su {[}user{]} -c 'command'`} \tn 
\mymulticolumn{1}{x{5.377cm}}{\hspace*{6 px}\rule{2px}{6px}\hspace*{6 px}Execute command as user. Default `root`} \tn 
% Row Count 5 (+ 2)
% Row 2
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{`sudo {[}-u user{]} command`} \tn 
\mymulticolumn{1}{x{5.377cm}}{\hspace*{6 px}\rule{2px}{6px}\hspace*{6 px}Execute command as user. Default `root`} \tn 
% Row Count 7 (+ 2)
% Row 3
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{`sudo -ll`} \tn 
\mymulticolumn{1}{x{5.377cm}}{\hspace*{6 px}\rule{2px}{6px}\hspace*{6 px}Which commands I'm allowed to execute} \tn 
% Row Count 9 (+ 2)
% Row 4
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{`visudo`} \tn 
\mymulticolumn{1}{x{5.377cm}}{\hspace*{6 px}\rule{2px}{6px}\hspace*{6 px}Edit `/etc/sudoers` file. Example \{\{nl\}\} `teralco ALL=(root) NOPASSWD: /etc/init.d/jboss` \{\{nl\}\} `teralco ALL=(jboss) NOPASSWD: /bin/kill`} \tn 
% Row Count 13 (+ 4)
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{UFW}}  \tn
% Row 0
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{`{\bf{ufw}} {\bf{status}} {[}{\emph{verbose}}|{\emph{numbered}}{]}`} \tn 
\mymulticolumn{1}{x{5.377cm}}{\hspace*{6 px}\rule{2px}{6px}\hspace*{6 px}Show status and rules} \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{`{\bf{ufw default}} deny incoming`\{\{nl\}\}`{\bf{ufw default}} allow outgoing`} \tn 
\mymulticolumn{1}{x{5.377cm}}{\hspace*{6 px}\rule{2px}{6px}\hspace*{6 px}Deny all incoming traffic by default\{\{nl\}\}Allow all outgoing traffic by default} \tn 
% Row Count 6 (+ 4)
% Row 2
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{`{\bf{ufw}} {[}{\emph{allow}}|{\emph{deny}}{]} {\bf{from}} IP {\bf{to}} {[}any|interface\_name{]} {[}{\bf{proto}} tcp|udp{]} {\bf{port}} PORT`} \tn 
\mymulticolumn{1}{x{5.377cm}}{\hspace*{6 px}\rule{2px}{6px}\hspace*{6 px}Full allow/deny rule} \tn 
% Row Count 9 (+ 3)
% Row 3
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{`{\bf{ufw}} {[}{\emph{allow}}|{\emph{deny}}{]} {\emph{service\_name}}`} \tn 
\mymulticolumn{1}{x{5.377cm}}{\hspace*{6 px}\rule{2px}{6px}\hspace*{6 px}Allow/deny a service (`ssh www ftp ...`)} \tn 
% Row Count 11 (+ 2)
% Row 4
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{`{\bf{ufw}} {[}{\emph{enable}}|{\emph{disable}}{]}`} \tn 
% Row Count 12 (+ 1)
% Row 5
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{`{\bf{ufw}} {\bf{delete}} {[}{\emph{rule}}|{\emph{number}}{]}`} \tn 
% Row Count 13 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Alt commands}}  \tn
% Row 0
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{`/var/log/messages \& /var/log/syslog`} \tn 
\mymulticolumn{1}{x{5.377cm}}{\hspace*{6 px}\rule{2px}{6px}\hspace*{6 px}System log files} \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{`{\bf{script}} file`} \tn 
\mymulticolumn{1}{x{5.377cm}}{\hspace*{6 px}\rule{2px}{6px}\hspace*{6 px}Record session commands in file} \tn 
% Row Count 4 (+ 2)
% Row 2
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{`{\bf{nohup}} command  \&`} \tn 
\mymulticolumn{1}{x{5.377cm}}{\hspace*{6 px}\rule{2px}{6px}\hspace*{6 px}Keep command running even after close session} \tn 
% Row Count 6 (+ 2)
% Row 3
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{`{\bf{tar -J}}xvf file.tar.xz {[}-C dest\_folder{]}`} \tn 
\mymulticolumn{1}{x{5.377cm}}{\hspace*{6 px}\rule{2px}{6px}\hspace*{6 px}Extract xz (higher compress ratio)} \tn 
% Row Count 8 (+ 2)
% Row 4
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{`zip -FF x.zip -{}-out Y.zip \&\& unzip Y.zip`} \tn 
\mymulticolumn{1}{x{5.377cm}}{\hspace*{6 px}\rule{2px}{6px}\hspace*{6 px}Merge zip files (x.zip, x.z01, x.z02)} \tn 
% Row Count 10 (+ 2)
% Row 5
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{`ps aux -{}-sort -rss`} \tn 
\mymulticolumn{1}{x{5.377cm}}{\hspace*{6 px}\rule{2px}{6px}\hspace*{6 px}Higher memory consumption processes} \tn 
% Row Count 12 (+ 2)
% Row 6
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{`fdisk -l`} \tn 
\mymulticolumn{1}{x{5.377cm}}{\hspace*{6 px}\rule{2px}{6px}\hspace*{6 px}List partition tables} \tn 
% Row Count 14 (+ 2)
% Row 7
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{`dd bs=4M if=input.iso of=/dev/sd? conv=fdatasync`} \tn 
\mymulticolumn{1}{x{5.377cm}}{\hspace*{6 px}\rule{2px}{6px}\hspace*{6 px}Burn iso in device} \tn 
% Row Count 16 (+ 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}{Searches}}  \tn
% Row 0
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{`{\bf{find}} path {\emph{-name}} *.log {\emph{-type}} f {\emph{-mtime}} +5 {\emph{-exec}} rm -rvf \{\} \textbackslash{};`} \tn 
\mymulticolumn{1}{x{5.377cm}}{\hspace*{6 px}\rule{2px}{6px}\hspace*{6 px}Find and delete files older than 5 days} \tn 
% Row Count 3 (+ 3)
% Row 1
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{`{\bf{find}} path {\emph{-type}} f {\emph{-printf}} "\%s\textbackslash{}t\%p\textbackslash{}n" | {\bf{sort}} {\emph{-rn}} | {\bf{head}} {\emph{-10}}`} \tn 
\mymulticolumn{1}{x{5.377cm}}{\hspace*{6 px}\rule{2px}{6px}\hspace*{6 px}Find the 10 biggest files} \tn 
% Row Count 6 (+ 3)
% Row 2
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{`{\bf{grep}} {\emph{-rlie}} 'pattern' path`} \tn 
\mymulticolumn{1}{x{5.377cm}}{\hspace*{6 px}\rule{2px}{6px}\hspace*{6 px}Find files with pattern content} \tn 
% Row Count 8 (+ 2)
% Row 3
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{`{\bf{du}} {\emph{-cks}} path/* | {\bf{sort}} {\emph{-rn}} | {\bf{head}} {\emph{-10}}`} \tn 
\mymulticolumn{1}{x{5.377cm}}{\hspace*{6 px}\rule{2px}{6px}\hspace*{6 px}Find biggest dirs} \tn 
% Row Count 11 (+ 3)
% Row 4
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{`{\bf{du}} {\emph{-sh}} path`} \tn 
\mymulticolumn{1}{x{5.377cm}}{\hspace*{6 px}\rule{2px}{6px}\hspace*{6 px}Dir size} \tn 
% Row Count 13 (+ 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}{Permissions}}  \tn
% Row 0
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{`{\bf{chmod}} {[}u|g|o{]}{[}+|-|={]}{[}rwx{]} dir\_file`} \tn 
\mymulticolumn{1}{x{5.377cm}}{\hspace*{6 px}\rule{2px}{6px}\hspace*{6 px}Change permissions} \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{`chmod {\bf{u{[}+|-{]}s}} file`} \tn 
\mymulticolumn{1}{x{5.377cm}}{\hspace*{6 px}\rule{2px}{6px}\hspace*{6 px}Set uid. File is always exec as owner user} \tn 
% Row Count 4 (+ 2)
% Row 2
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{`chmod {\bf{g{[}+|-{]}s}} dir`} \tn 
\mymulticolumn{1}{x{5.377cm}}{\hspace*{6 px}\rule{2px}{6px}\hspace*{6 px}Set gid. New files in folder are always owned by folder owner} \tn 
% Row Count 7 (+ 3)
% Row 3
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{`chmod {\bf{{[}+|-{]}t}} dir`} \tn 
\mymulticolumn{1}{x{5.377cm}}{\hspace*{6 px}\rule{2px}{6px}\hspace*{6 px}Sticky Bit. Files in dir can only be renamed or removed by owner or root} \tn 
% Row Count 10 (+ 3)
% Row 4
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{`{\bf{umask}} xxxx`} \tn 
\mymulticolumn{1}{x{5.377cm}}{\hspace*{6 px}\rule{2px}{6px}\hspace*{6 px}Set default permissions to dirs} \tn 
% Row Count 12 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{2.43873 cm} x{2.53827 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Enviroment}}  \tn
% Row 0
\SetRowColor{LightBackground}
`/etc/profile\{\{nl\}\}/etc/bash.bashrc` & Global env config files \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
`\textasciitilde{}/.bashrc\{\{nl\}\}\textasciitilde{}/.profile` & User env config file \tn 
% Row Count 4 (+ 2)
% Row 2
\SetRowColor{LightBackground}
`printenv` & Print defined env vars \tn 
% Row Count 6 (+ 2)
% Row 3
\SetRowColor{white}
`alias` & Show defined aliases \tn 
% Row Count 7 (+ 1)
% Row 4
\SetRowColor{LightBackground}
`export VAR` & Make a VAR available to child process \tn 
% Row Count 9 (+ 2)
% Row 5
\SetRowColor{white}
`{\bf{source}} script`\{\{nl\}\}`{\bf{.}} script` & Load a file into current script or shell session \tn 
% Row Count 12 (+ 3)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Network}}  \tn
% Row 0
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{`{\bf{ip}} addr`} \tn 
\mymulticolumn{1}{x{5.377cm}}{\hspace*{6 px}\rule{2px}{6px}\hspace*{6 px}Show ips} \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{`{\bf{ifup}}|{\bf{ifdown}} {\emph{interface\_name}}`} \tn 
\mymulticolumn{1}{x{5.377cm}}{\hspace*{6 px}\rule{2px}{6px}\hspace*{6 px}Up or down an interface} \tn 
% Row Count 4 (+ 2)
% Row 2
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{\seqsplit{`/etc/network/interfaces`}} \tn 
\mymulticolumn{1}{x{5.377cm}}{\hspace*{6 px}\rule{2px}{6px}\hspace*{6 px}File interfaces are defined} \tn 
% Row Count 6 (+ 2)
% Row 3
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{`{\bf{hostnamectl}} {[}set-hostname {\emph{hostname}}{]}`} \tn 
\mymulticolumn{1}{x{5.377cm}}{\hspace*{6 px}\rule{2px}{6px}\hspace*{6 px}Manage hostname (`/etc/hostname`) without restarting} \tn 
% Row Count 9 (+ 3)
% Row 4
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{`{\bf{netstat}} -tuln`} \tn 
\mymulticolumn{1}{x{5.377cm}}{\hspace*{6 px}\rule{2px}{6px}\hspace*{6 px}All tcp and udp listening ports} \tn 
% Row Count 11 (+ 2)
% Row 5
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{`{\bf{ss}} -tuln`} \tn 
\mymulticolumn{1}{x{5.377cm}}{\hspace*{6 px}\rule{2px}{6px}\hspace*{6 px}All tcp and udp listening ports} \tn 
% Row Count 13 (+ 2)
% Row 6
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{`{\bf{nc}} {\emph{-vz}} host port`} \tn 
\mymulticolumn{1}{x{5.377cm}}{\hspace*{6 px}\rule{2px}{6px}\hspace*{6 px}Scan port in host} \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}{SSH}}  \tn
% Row 0
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{`{\bf{ssh-keygen}} {[}-f /etc/ssh/ssh\_host\_rsa\_key{]} -t rsa -b 4096`} \tn 
\mymulticolumn{1}{x{5.377cm}}{\hspace*{6 px}\rule{2px}{6px}\hspace*{6 px}Generate ssh rsa key. By default `\textasciitilde{}/.ssh/id\_rsa`} \tn 
% Row Count 4 (+ 4)
% Row 1
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{`{\bf{ssh-copy-id}} {[}-i \textasciitilde{}/.ssh/mykey{]} user@host`} \tn 
\mymulticolumn{1}{x{5.377cm}}{\hspace*{6 px}\rule{2px}{6px}\hspace*{6 px}Copy ssh key in remote host (`\textasciitilde{}/.ssh/authorized\_keys`). By default `\textasciitilde{}/.ssh/id\_rsa`.} \tn 
% Row Count 7 (+ 3)
% Row 2
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{`{\bf{ssh}} user@host command`} \tn 
\mymulticolumn{1}{x{5.377cm}}{\hspace*{6 px}\rule{2px}{6px}\hspace*{6 px}Exec command in host} \tn 
% Row Count 9 (+ 2)
% Row 3
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{`{\bf{ssh}} {\emph{-J}} hostA hostB`} \tn 
\mymulticolumn{1}{x{5.377cm}}{\hspace*{6 px}\rule{2px}{6px}\hspace*{6 px}Connect to hostB through hostA (Jumping). Identification in localhost. Can use `{\bf{ProxyJump}}` in `\textasciitilde{}/.ssh/config`} \tn 
% Row Count 13 (+ 4)
% Row 4
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{`{\bf{ssh}} {\emph{-D}} port {\emph{-fCqN}} user@host`} \tn 
\mymulticolumn{1}{x{5.377cm}}{\hspace*{6 px}\rule{2px}{6px}\hspace*{6 px}Proxy socket (HTTP and HTTPS traffic) through port.} \tn 
% Row Count 16 (+ 3)
% Row 5
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{`{\bf{ssh}} {\emph{-nNT -L}} 9000:remote\_server:80 user@host`} \tn 
\mymulticolumn{1}{x{5.377cm}}{\hspace*{6 px}\rule{2px}{6px}\hspace*{6 px}Tunneling (Local port forwarding). Map `remote\_server:80` into `localhost:9000` through host} \tn 
% Row Count 20 (+ 4)
% Row 6
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{`{\bf{ssh}} {\emph{-nNT -R}} 9000:localhost:3000 user@host`} \tn 
\mymulticolumn{1}{x{5.377cm}}{\hspace*{6 px}\rule{2px}{6px}\hspace*{6 px}Tunneling (Remote port forwarding). Map `localhost:3000` into `host:9000`} \tn 
% Row Count 23 (+ 3)
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}


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

\end{document}