\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{spartan782}
\pdfinfo{
  /Title (posix.pdf)
  /Creator (Cheatography)
  /Author (spartan782)
  /Subject (Posix 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}{32213A}
\definecolor{LightBackground}{HTML}{F8F8F8}
\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{Posix Cheat Sheet}}}} \\
    \normalsize{by \textcolor{DarkBackground}{spartan782} via \textcolor{DarkBackground}{\uline{cheatography.com/57408/cs/15229/}}}
\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}spartan782 \\
  \uline{cheatography.com/spartan782} \\
  \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 March, 2018.\\
   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{1.9908 cm} x{2.9862 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Getting Help}}  \tn
% Row 0
\SetRowColor{LightBackground}
{\bf{Command}} & {\bf{Description}} \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
man \textless{}command\textgreater{} & read the manual \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
apropos & search "whatis" database \tn 
% Row Count 3 (+ 1)
% Row 3
\SetRowColor{white}
\textless{}command\textgreater{} -h & help for specific command \tn 
% Row Count 5 (+ 2)
% Row 4
\SetRowColor{LightBackground}
\{\{nobreak\}\}\textless{}command\textgreater{} -{}-help & help for specific command \tn 
% Row Count 7 (+ 2)
% Row 5
\SetRowColor{white}
find & find files \tn 
% Row Count 8 (+ 1)
% Row 6
\SetRowColor{LightBackground}
locate & find files \tn 
% Row Count 9 (+ 1)
% Row 7
\SetRowColor{white}
whereis & searches man pages and source files for a program \tn 
% Row Count 12 (+ 3)
% Row 8
\SetRowColor{LightBackground}
which & Search the user's \$path for a program file \tn 
% Row Count 14 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{1.74195 cm} x{3.23505 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Sorting \& Filtering}}  \tn
% Row 0
\SetRowColor{LightBackground}
\{\{nobreak\}\}{\bf{Command}} & {\bf{Description}} \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
| (pipe) & passes output from one command to another \tn 
% Row Count 4 (+ 2)
% Row 2
\SetRowColor{LightBackground}
grep & search file(s) for lines that match a given pattern \tn 
% Row Count 6 (+ 2)
% Row 3
\SetRowColor{white}
egrep & search file(s) for lines that match an extended exp \tn 
% Row Count 8 (+ 2)
% Row 4
\SetRowColor{LightBackground}
zgrep & search compressed file(s) for lines that match pattern \tn 
% Row Count 11 (+ 3)
% Row 5
\SetRowColor{white}
sort & sort text files \tn 
% Row Count 12 (+ 1)
% Row 6
\SetRowColor{LightBackground}
wc & print byte, word, and line counts \tn 
% Row Count 14 (+ 2)
% Row 7
\SetRowColor{white}
cut & divide a file into several parts \tn 
% Row Count 16 (+ 2)
% Row 8
\SetRowColor{LightBackground}
uniq & uniquify files \tn 
% Row Count 17 (+ 1)
% Row 9
\SetRowColor{white}
sed & Stream manipulation tool \tn 
% Row Count 18 (+ 1)
% Row 10
\SetRowColor{LightBackground}
awk & Programming Language and Text processor \tn 
% Row Count 20 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{1.79172 cm} x{3.18528 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{System Info}}  \tn
% Row 0
\SetRowColor{LightBackground}
\{\{nobreak\}\}{\bf{Command}} & {\bf{Description}} \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
whoami & print the current user id and name \tn 
% Row Count 4 (+ 2)
% Row 2
\SetRowColor{LightBackground}
hostname & print or set system name \tn 
% Row Count 5 (+ 1)
% Row 3
\SetRowColor{white}
date & display or change the date \& time \tn 
% Row Count 7 (+ 2)
% Row 4
\SetRowColor{LightBackground}
uptime & show time since last reboot / start \tn 
% Row Count 9 (+ 2)
% Row 5
\SetRowColor{white}
users & list users currently logged in \tn 
% Row Count 11 (+ 2)
% Row 6
\SetRowColor{LightBackground}
finger & display info about user \tn 
% Row Count 12 (+ 1)
% Row 7
\SetRowColor{white}
who & print all usernames currently logged in \tn 
% Row Count 14 (+ 2)
% Row 8
\SetRowColor{LightBackground}
uname & print system information \tn 
% Row Count 15 (+ 1)
% Row 9
\SetRowColor{white}
df & show disk usage \tn 
% Row Count 16 (+ 1)
% Row 10
\SetRowColor{LightBackground}
du & show directory space usage \tn 
% Row Count 18 (+ 2)
% Row 11
\SetRowColor{white}
free & show memory and swap usage \tn 
% Row Count 20 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{2.23965 cm} x{2.73735 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Directory Aliases}}  \tn
% Row 0
\SetRowColor{LightBackground}
{\bf{Alias}} & {\bf{Description}} \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
. (period) & "here" or current working directory \tn 
% Row Count 3 (+ 2)
% Row 2
\SetRowColor{LightBackground}
\{\{nobreak\}\}.. (double period) & up one level from current directory \tn 
% Row Count 5 (+ 2)
% Row 3
\SetRowColor{white}
\textasciitilde{} & current user's home directory \tn 
% Row Count 7 (+ 2)
% Row 4
\SetRowColor{LightBackground}
- & last working directory \tn 
% Row Count 8 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{1.89126 cm} x{3.08574 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Navigation}}  \tn
% Row 0
\SetRowColor{LightBackground}
\{\{nobreak\}\}{\bf{Command}} & {\bf{Description}} \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
pwd & displays current working dir \tn 
% Row Count 4 (+ 2)
% Row 2
\SetRowColor{LightBackground}
ls & list contents \tn 
% Row Count 5 (+ 1)
% Row 3
\SetRowColor{white}
tree & displays dir contents in visual tree \tn 
% Row Count 7 (+ 2)
% Row 4
\SetRowColor{LightBackground}
cd & change directory \tn 
% Row Count 8 (+ 1)
\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}{Users \& Permissions}}  \tn
% Row 0
\SetRowColor{LightBackground}
{\bf{Command}} & {\bf{Description}} \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
id & print user and group id's \tn 
% Row Count 3 (+ 1)
% Row 2
\SetRowColor{LightBackground}
useradd & create new user account \tn 
% Row Count 4 (+ 1)
% Row 3
\SetRowColor{white}
passwd & modify a user password \tn 
% Row Count 5 (+ 1)
% Row 4
\SetRowColor{LightBackground}
usermod & modify user account \tn 
% Row Count 6 (+ 1)
% Row 5
\SetRowColor{white}
userdel & delete a user account \tn 
% Row Count 7 (+ 1)
% Row 6
\SetRowColor{LightBackground}
groups & print group names a user is in \tn 
% Row Count 9 (+ 2)
% Row 7
\SetRowColor{white}
groupadd & add a user security group \tn 
% Row Count 10 (+ 1)
% Row 8
\SetRowColor{LightBackground}
groupmod & modify a group \tn 
% Row Count 11 (+ 1)
% Row 9
\SetRowColor{white}
groupdel & delete a group \tn 
% Row Count 12 (+ 1)
% Row 10
\SetRowColor{LightBackground}
chown & change file owner and group \tn 
% Row Count 13 (+ 1)
% Row 11
\SetRowColor{white}
chmod & change access permissions \tn 
% Row Count 14 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{1.74195 cm} x{3.23505 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Reading \& Manipulating Files}}  \tn
% Row 0
\SetRowColor{LightBackground}
\{\{nobreak\}\}{\bf{Command}} & {\bf{Description}} \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
cat & concatenate and print (display) the content of files \tn 
% Row Count 4 (+ 2)
% Row 2
\SetRowColor{LightBackground}
less & display output one screen at a time \tn 
% Row Count 6 (+ 2)
% Row 3
\SetRowColor{white}
tail & output the last part of file (-f to follow) \tn 
% Row Count 8 (+ 2)
% Row 4
\SetRowColor{LightBackground}
touch & create a new (empty) file or change file timestamps \tn 
% Row Count 10 (+ 2)
% Row 5
\SetRowColor{white}
nano & create or edit file in nano editor \tn 
% Row Count 12 (+ 2)
% Row 6
\SetRowColor{LightBackground}
vim & create / edit file in vim editor \tn 
% Row Count 14 (+ 2)
% Row 7
\SetRowColor{white}
rm & remove file \tn 
% Row Count 15 (+ 1)
% Row 8
\SetRowColor{LightBackground}
mkdir & create dir \tn 
% Row Count 16 (+ 1)
% Row 9
\SetRowColor{white}
rmdir & remove dir \tn 
% Row Count 17 (+ 1)
% Row 10
\SetRowColor{LightBackground}
ln & create a hard link to file \tn 
% Row Count 18 (+ 1)
% Row 11
\SetRowColor{white}
ln -s & create a symbolic link to a file \tn 
% Row Count 20 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{2.04057 cm} x{2.93643 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Bash Shortcuts}}  \tn
% Row 0
\SetRowColor{LightBackground}
{\bf{Shortcut}} & {\bf{Description}} \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
\{\{nobreak\}\}Up/Down Arrow & access previous command history \tn 
% Row Count 3 (+ 2)
% Row 2
\SetRowColor{LightBackground}
ctrl + A & move cursor to start of line \tn 
% Row Count 5 (+ 2)
% Row 3
\SetRowColor{white}
ctrl + E & move cursor to end of line \tn 
% Row Count 7 (+ 2)
% Row 4
\SetRowColor{LightBackground}
ctrl + U & delete left of cursor \tn 
% Row Count 8 (+ 1)
% Row 5
\SetRowColor{white}
ctrl + K & delete right of cursor \tn 
% Row Count 9 (+ 1)
% Row 6
\SetRowColor{LightBackground}
ctrl + W & delete word on left \tn 
% Row Count 10 (+ 1)
% Row 7
\SetRowColor{white}
ctrl + \textless{} & jump to left by argument \tn 
% Row Count 12 (+ 2)
% Row 8
\SetRowColor{LightBackground}
ctrl + \textgreater{} & jump to right by argument \tn 
% Row Count 14 (+ 2)
% Row 9
\SetRowColor{white}
\textless{}TAB\textgreater{} & completes filename or command \tn 
% Row Count 16 (+ 2)
% Row 10
\SetRowColor{LightBackground}
ctrl + R & reverse search history \tn 
% Row Count 17 (+ 1)
% Row 11
\SetRowColor{white}
!! & repeat last command \tn 
% Row Count 18 (+ 1)
% Row 12
\SetRowColor{LightBackground}
history & display contents on `.bash\_history` \tn 
% Row Count 20 (+ 2)
% Row 13
\SetRowColor{white}
!\#\#\# & rerun specific history entry \tn 
% Row Count 22 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{0.9954 cm} x{3.9816 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Networking}}  \tn
% Row 0
\SetRowColor{LightBackground}
ip a & display routing, devices and tunnels \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
ss & socket statistics (show open / listening ports) \tn 
% Row Count 4 (+ 2)
% Row 2
\SetRowColor{LightBackground}
ping & icmp to test connectivity \tn 
% Row Count 5 (+ 1)
% Row 3
\SetRowColor{white}
\seqsplit{traceroute} & trace route to host \tn 
% Row Count 7 (+ 2)
% Row 4
\SetRowColor{LightBackground}
dig & DNS lookup \tn 
% Row Count 8 (+ 1)
% Row 5
\SetRowColor{white}
ssh & Secure Shell client (remote login program) \tn 
% Row Count 10 (+ 2)
% Row 6
\SetRowColor{LightBackground}
scp & secure copy (remote file copy) \tn 
% Row Count 11 (+ 1)
% Row 7
\SetRowColor{white}
tcpdump & dump traffic on a network \tn 
% Row Count 12 (+ 1)
% Row 8
\SetRowColor{LightBackground}
nmtui & textual interface to configure networking \tn 
% Row Count 14 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{5.377cm}}{Common Switch's used: \newline {\bf{ss -lnt}} \newline {\bf{ip a}} (provides address) \newline {\bf{ip route}} (provides routes)}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{1.14471 cm} x{3.83229 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Process Monitoring}}  \tn
% Row 0
\SetRowColor{LightBackground}
{\bf{Command}} & {\bf{Description}} \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
w & who is logged on \tn 
% Row Count 3 (+ 1)
% Row 2
\SetRowColor{LightBackground}
ps & process status \tn 
% Row Count 4 (+ 1)
% Row 3
\SetRowColor{white}
lsof & list open files \tn 
% Row Count 5 (+ 1)
% Row 4
\SetRowColor{LightBackground}
kill & kill process \tn 
% Row Count 6 (+ 1)
% Row 5
\SetRowColor{white}
iostat & report CPU and i/o statistics \tn 
% Row Count 7 (+ 1)
% Row 6
\SetRowColor{LightBackground}
top & list processes running on the system \tn 
% Row Count 9 (+ 2)
% Row 7
\SetRowColor{white}
htop & interactive process viewer \tn 
% Row Count 10 (+ 1)
% Row 8
\SetRowColor{LightBackground}
sudo halt & shutdown system \tn 
% Row Count 11 (+ 1)
% Row 9
\SetRowColor{white}
sudo reboot & reboot system \tn 
% Row Count 13 (+ 2)
% Row 10
\SetRowColor{LightBackground}
\seqsplit{systemctl} & Tool used to interact with Systemd \tn 
% Row Count 15 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{5.377cm}}{Common Switch's used: \newline {\bf{ ps -aux}}}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}


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

\end{document}