\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{ivese}
\pdfinfo{
  /Title (sys-admin.pdf)
  /Creator (Cheatography)
  /Author (ivese)
  /Subject (SYS ADMIN Cheat Sheet)
}

% Lengths and widths
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\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}{520BA3}
\definecolor{LightBackground}{HTML}{F4EFF9}
\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{SYS ADMIN Cheat Sheet}}}} \\
    \normalsize{by \textcolor{DarkBackground}{ivese} via \textcolor{DarkBackground}{\uline{cheatography.com/89700/cs/20418/}}}
\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}ivese \\
  \uline{cheatography.com/ivese} \\
  \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 5th December, 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*}{4}

\begin{tabularx}{3.833cm}{p{0.44629 cm} x{2.98671 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{3.833cm}}{\bf\textcolor{white}{Commands\#1}}  \tn
% Row 0
\SetRowColor{LightBackground}
grep & searches text files for lines that match \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
chmod & changes a user's permissions \tn 
% Row Count 3 (+ 1)
% Row 2
\SetRowColor{LightBackground}
chown & change the owner \tn 
% Row Count 4 (+ 1)
% Row 3
\SetRowColor{white}
pwd & shows the full path name of the current working directory \tn 
% Row Count 6 (+ 2)
% Row 4
\SetRowColor{LightBackground}
head & displays the start of a text file \tn 
% Row Count 7 (+ 1)
% Row 5
\SetRowColor{white}
tail & displays the end of a text file \tn 
% Row Count 8 (+ 1)
% Row 6
\SetRowColor{LightBackground}
cat & displays the full text file \tn 
% Row Count 9 (+ 1)
% Row 7
\SetRowColor{white}
find & Searches files based on user criteria \tn 
% Row Count 11 (+ 2)
% Row 8
\SetRowColor{LightBackground}
mkdir & creates a directory \tn 
% Row Count 12 (+ 1)
% Row 9
\SetRowColor{white}
mv & movies a file or directory from one location to another \tn 
% Row Count 14 (+ 2)
% Row 10
\SetRowColor{LightBackground}
cp & copies a file or directory \tn 
% Row Count 15 (+ 1)
% Row 11
\SetRowColor{white}
wget & retrieves content from a web server \tn 
% Row Count 17 (+ 2)
% Row 12
\SetRowColor{LightBackground}
\seqsplit{whoami} & shows username \tn 
% Row Count 19 (+ 2)
% Row 13
\SetRowColor{white}
man & show the man pages of commands \tn 
% Row Count 20 (+ 1)
% Row 14
\SetRowColor{LightBackground}
wc & counts the number of lines words and characters \tn 
% Row Count 22 (+ 2)
% Row 15
\SetRowColor{white}
du & checks disk usage \tn 
% Row Count 23 (+ 1)
% Row 16
\SetRowColor{LightBackground}
rm & removes objects \tn 
% Row Count 24 (+ 1)
% Row 17
\SetRowColor{white}
vi & screen oriented text editor \tn 
% Row Count 25 (+ 1)
% Row 18
\SetRowColor{LightBackground}
nano & screen oriented text editor \tn 
% Row Count 26 (+ 1)
% Row 19
\SetRowColor{white}
touch & create a file \tn 
% Row Count 27 (+ 1)
% Row 20
\SetRowColor{LightBackground}
gzip & compress/decompress a file \tn 
% Row Count 28 (+ 1)
% Row 21
\SetRowColor{white}
ssh & used to remote log into a host \tn 
% Row Count 29 (+ 1)
% Row 22
\SetRowColor{LightBackground}
sudo & gives temporary root permissions \tn 
% Row Count 30 (+ 1)
\end{tabularx}
\par\addvspace{1.3em}

\vfill
\columnbreak
\begin{tabularx}{3.833cm}{p{0.44629 cm} x{2.98671 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{3.833cm}}{\bf\textcolor{white}{Commands\#1 (cont)}}  \tn
% Row 23
\SetRowColor{LightBackground}
sort & lists files in a sorted order \tn 
% Row Count 1 (+ 1)
% Row 24
\SetRowColor{white}
rmdir & removes a directory \tn 
% Row Count 2 (+ 1)
% Row 25
\SetRowColor{LightBackground}
echo & moves data into a file \tn 
% Row Count 3 (+ 1)
% Row 26
\SetRowColor{white}
cd & change directory \tn 
% Row Count 4 (+ 1)
% Row 27
\SetRowColor{LightBackground}
ls & list the current directory \tn 
% Row Count 5 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{3.833cm}{x{1.27021 cm} x{2.16279 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{3.833cm}}{\bf\textcolor{white}{Commands \#2}}  \tn
% Row 0
\SetRowColor{LightBackground}
ifconfig & used to change IP and net mask \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
which & finds the direct path of what you pass to it \tn 
% Row Count 4 (+ 2)
% Row 2
\SetRowColor{LightBackground}
groupadd & adds a user group \tn 
% Row Count 5 (+ 1)
% Row 3
\SetRowColor{white}
dnf install & used to install libraries/packages \tn 
% Row Count 7 (+ 2)
% Row 4
\SetRowColor{LightBackground}
adduser & adds user \tn 
% Row Count 8 (+ 1)
% Row 5
\SetRowColor{white}
systemctl & used to manage a systemd service. \seqsplit{(start/enable/restart/daemon-reload/etc)} \tn 
% Row Count 11 (+ 3)
% Row 6
\SetRowColor{LightBackground}
journalctl & used to view system logs for systemd \tn 
% Row Count 13 (+ 2)
% Row 7
\SetRowColor{white}
pip3 install & used to install python modules \tn 
% Row Count 15 (+ 2)
% Row 8
\SetRowColor{LightBackground}
source activate & used to activate a virtual environment \tn 
% Row Count 17 (+ 2)
% Row 9
\SetRowColor{white}
firewall-cmd & provides an interface to manage runtime and permanent firewall configuration. \tn 
% Row Count 21 (+ 4)
% Row 10
\SetRowColor{LightBackground}
history & used to look at your previously input commands \tn 
% Row Count 23 (+ 2)
% Row 11
\SetRowColor{white}
mount & mounts file/directory (redirects folder path to another location) \tn 
% Row Count 26 (+ 3)
% Row 12
\SetRowColor{LightBackground}
unmount & umounts file/directory \tn 
% Row Count 27 (+ 1)
% Row 13
\SetRowColor{white}
locate & finds files based of of a database \tn 
% Row Count 29 (+ 2)
% Row 14
\SetRowColor{LightBackground}
su & used to change the current user \tn 
% Row Count 31 (+ 2)
\end{tabularx}
\par\addvspace{1.3em}

\vfill
\columnbreak
\begin{tabularx}{3.833cm}{x{1.27021 cm} x{2.16279 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{3.833cm}}{\bf\textcolor{white}{Commands \#2 (cont)}}  \tn
% Row 15
\SetRowColor{LightBackground}
.(followed by filename) & Any file that begins with a "." is hidden. "." also can be used to reference the current working directory \tn 
% Row Count 5 (+ 5)
% Row 16
\SetRowColor{white}
ping & test the reachability of a host on an Internet Protocol network \tn 
% Row Count 8 (+ 3)
% Row 17
\SetRowColor{LightBackground}
netstat & displays network connections for Transmission Control Protocol \tn 
% Row Count 11 (+ 3)
% Row 18
\SetRowColor{white}
kill(Ctrl + C) & used to stop a running process \tn 
% Row Count 13 (+ 2)
% Row 19
\SetRowColor{LightBackground}
traceroute & displays the route and measures transit delays of packets across an Internet Protocol network \tn 
% Row Count 17 (+ 4)
% Row 20
\SetRowColor{white}
\#!/bin/bash & used to denote a bash script \tn 
% Row Count 19 (+ 2)
% Row 21
\SetRowColor{LightBackground}
wget & retrieves content from web servers \tn 
% Row Count 21 (+ 2)
% Row 22
\SetRowColor{white}
scp & copies file from one host to another \tn 
% Row Count 23 (+ 2)
% Row 23
\SetRowColor{LightBackground}
exit & exits the current shell \tn 
% Row Count 24 (+ 1)
% Row 24
\SetRowColor{white}
clear & clears the terminal screen \tn 
% Row Count 26 (+ 2)
% Row 25
\SetRowColor{LightBackground}
ln & creates a symbolic link between two given arguments \tn 
% Row Count 29 (+ 3)
% Row 26
\SetRowColor{white}
xargs & executes commands from standard input \tn 
% Row Count 31 (+ 2)
\end{tabularx}
\par\addvspace{1.3em}

\vfill
\columnbreak
\begin{tabularx}{3.833cm}{x{1.27021 cm} x{2.16279 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{3.833cm}}{\bf\textcolor{white}{Commands \#2 (cont)}}  \tn
% Row 27
\SetRowColor{LightBackground}
route & command used to view and manipulate the IP routing table \tn 
% Row Count 3 (+ 3)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{3.833cm}{x{1.57918 cm} x{1.85382 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{3.833cm}}{\bf\textcolor{white}{Commands\#3}}  \tn
% Row 0
\SetRowColor{LightBackground}
{[}{[}...{]}{]} & used to test in a bash script. \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
name= & used to assign a variable. \tn 
% Row Count 4 (+ 2)
% Row 2
\SetRowColor{LightBackground}
if /fi & marks the start and end of a if statement \tn 
% Row Count 6 (+ 2)
% Row 3
\SetRowColor{white}
elif & marks and else if statement in bash \tn 
% Row Count 8 (+ 2)
% Row 4
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{3.833cm}}{Spaces in function calls represent different arguments} \tn 
% Row Count 10 (+ 2)
% Row 5
\SetRowColor{white}
for ((i = 0 ; i \textless{} 100 ; i++)); & one example of a bash for loop \tn 
% Row Count 12 (+ 2)
% Row 6
\SetRowColor{LightBackground}
\$\# & gets number of arguments \tn 
% Row Count 14 (+ 2)
% Row 7
\SetRowColor{white}
\$* & gets all arguments \tn 
% Row Count 15 (+ 1)
% Row 8
\SetRowColor{LightBackground}
\$1 & gets the first argument \tn 
% Row Count 17 (+ 2)
% Row 9
\SetRowColor{white}
\$@ & gets all arguments starting from the first \tn 
% Row Count 19 (+ 2)
% Row 10
\SetRowColor{LightBackground}
for i in \{1..5\}; & python style for loop \tn 
% Row Count 20 (+ 1)
% Row 11
\SetRowColor{white}
do / done & denotes what to do during a for loop and the end of a loop \tn 
% Row Count 23 (+ 3)
% Row 12
\SetRowColor{LightBackground}
while loop & loops while something is true \tn 
% Row Count 25 (+ 2)
% Row 13
\SetRowColor{white}
until loop & loops while something is false \tn 
% Row Count 27 (+ 2)
% Row 14
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{3.833cm}}{return followed by a number is used for error return status} \tn 
% Row Count 29 (+ 2)
% Row 15
\SetRowColor{white}
\$\{name\} & example of how to refer to a variable \tn 
% Row Count 31 (+ 2)
\end{tabularx}
\par\addvspace{1.3em}

\vfill
\columnbreak
\begin{tabularx}{3.833cm}{x{1.57918 cm} x{1.85382 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{3.833cm}}{\bf\textcolor{white}{Commands\#3 (cont)}}  \tn
% Row 16
\SetRowColor{LightBackground}
"" & used to mark a section as a string \tn 
% Row Count 2 (+ 2)
% Row 17
\SetRowColor{white}
env & displays all environment variables \tn 
% Row Count 4 (+ 2)
% Row 18
\SetRowColor{LightBackground}
export & defines an environment variable \tn 
% Row Count 6 (+ 2)
% Row 19
\SetRowColor{white}
array=({[}0{]}=valA {[}1{]}=valB {[}2{]}=valC) & an example of how to instantiate an array \tn 
% Row Count 8 (+ 2)
% Row 20
\SetRowColor{LightBackground}
function name() \{commands\} & example of a bash functions \tn 
% Row Count 10 (+ 2)
% Row 21
\SetRowColor{white}
\&\& & and operator \tn 
% Row Count 11 (+ 1)
% Row 22
\SetRowColor{LightBackground}
|| & or operator \tn 
% Row Count 12 (+ 1)
% Row 23
\SetRowColor{white}
== & checks if a string equals another \tn 
% Row Count 14 (+ 2)
% Row 24
\SetRowColor{LightBackground}
!= & checks that string does not equal another \tn 
% Row Count 16 (+ 2)
% Row 25
\SetRowColor{white}
\textgreater{} & checks that string is greater than another \tn 
% Row Count 18 (+ 2)
% Row 26
\SetRowColor{LightBackground}
\textless{} & checks that string is less than another \tn 
% Row Count 20 (+ 2)
% Row 27
\SetRowColor{white}
-lt & less than for integers \tn 
% Row Count 22 (+ 2)
% Row 28
\SetRowColor{LightBackground}
-le & less than or equal for integers \tn 
% Row Count 24 (+ 2)
% Row 29
\SetRowColor{white}
-eq & equal for integers \tn 
% Row Count 25 (+ 1)
% Row 30
\SetRowColor{LightBackground}
-gt & greater than for integers \tn 
% Row Count 27 (+ 2)
% Row 31
\SetRowColor{white}
-ge & greater than or equal for integers \tn 
% Row Count 29 (+ 2)
% Row 32
\SetRowColor{LightBackground}
-ne & not equal for integers \tn 
% Row Count 31 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{3.833cm}{p{0.6866 cm} x{2.7464 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{3.833cm}}{\bf\textcolor{white}{Commands\#4}}  \tn
% Row 0
\SetRowColor{LightBackground}
git clone & clones a local or remote repository \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
git commit & commits current contents of the index and the given log message describing the changes. \tn 
% Row Count 5 (+ 3)
% Row 2
\SetRowColor{LightBackground}
git push & uploads local content to a remote repository \tn 
% Row Count 7 (+ 2)
% Row 3
\SetRowColor{white}
git status & gets the status of the git repository \tn 
% Row Count 9 (+ 2)
% Row 4
\SetRowColor{LightBackground}
df & shows disk usage \tn 
% Row Count 10 (+ 1)
% Row 5
\SetRowColor{white}
enable & enables and disables shell built-ins \tn 
% Row Count 12 (+ 2)
% Row 6
\SetRowColor{LightBackground}
-a file & file exists \tn 
% Row Count 13 (+ 1)
% Row 7
\SetRowColor{white}
-d file & file exists and is a directory \tn 
% Row Count 14 (+ 1)
% Row 8
\SetRowColor{LightBackground}
-e file & file exists; same -a \tn 
% Row Count 15 (+ 1)
% Row 9
\SetRowColor{white}
-f file & file exists and is a regular file \tn 
% Row Count 17 (+ 2)
% Row 10
\SetRowColor{LightBackground}
-r file & you have read permission \tn 
% Row Count 18 (+ 1)
% Row 11
\SetRowColor{white}
-s file & file exists and is not empty \tn 
% Row Count 19 (+ 1)
% Row 12
\SetRowColor{LightBackground}
-w file & you have write permission \tn 
% Row Count 20 (+ 1)
% Row 13
\SetRowColor{white}
-x file & you have execute permission on file \tn 
% Row Count 22 (+ 2)
% Row 14
\SetRowColor{LightBackground}
-N file & file was modified since it was last read \tn 
% Row Count 24 (+ 2)
% Row 15
\SetRowColor{white}
-O file & you own the file \tn 
% Row Count 25 (+ 1)
% Row 16
\SetRowColor{LightBackground}
-G file & file's group ID matches yours \tn 
% Row Count 26 (+ 1)
% Row 17
\SetRowColor{white}
yes & prints out an infinite loop with the given input \tn 
% Row Count 28 (+ 2)
% Row 18
\SetRowColor{LightBackground}
/ & root directory \tn 
% Row Count 29 (+ 1)
% Row 19
\SetRowColor{white}
\seqsplit{hostname} & outputs the name of the current computer/server \tn 
% Row Count 31 (+ 2)
\end{tabularx}
\par\addvspace{1.3em}

\vfill
\columnbreak
\begin{tabularx}{3.833cm}{p{0.6866 cm} x{2.7464 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{3.833cm}}{\bf\textcolor{white}{Commands\#4 (cont)}}  \tn
% Row 20
\SetRowColor{LightBackground}
write & sends a message to another user logged in to this computer \tn 
% Row Count 2 (+ 2)
% Row 21
\SetRowColor{white}
wall & broadcasts a message to all other users logged in to this computer \tn 
% Row Count 5 (+ 3)
% Row 22
\SetRowColor{LightBackground}
sleep & pause for a given number of seconds or ms \tn 
% Row Count 7 (+ 2)
% Row 23
\SetRowColor{white}
umask & change the default permissions given to newly created files \tn 
% Row Count 9 (+ 2)
% Row 24
\SetRowColor{LightBackground}
cal & outputs an ASCII calendar \tn 
% Row Count 10 (+ 1)
% Row 25
\SetRowColor{white}
date & outputs the current date/time \tn 
% Row Count 11 (+ 1)
% Row 26
\SetRowColor{LightBackground}
read & reads a value from standard input \tn 
% Row Count 13 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}


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

\end{document}