\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{tteengx}
\pdfinfo{
  /Title (os.pdf)
  /Creator (Cheatography)
  /Author (tteengx)
  /Subject (OS 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{OS Cheat Sheet}}}} \\
    \normalsize{by \textcolor{DarkBackground}{tteengx} via \textcolor{DarkBackground}{\uline{cheatography.com/118200/cs/21838/}}}
\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}tteengx \\
  \uline{cheatography.com/tteengx} \\
  \end{tabulary}
\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
  \SetRowColor{FootBackground}
  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Cheat Sheet}}  \\
   \vspace{-2pt}Published 19th April, 2023.\\
   Updated 19th April, 2023.\\
   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{2.4885 cm} x{2.4885 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Vi Editor}}  \tn
% Row 0
\SetRowColor{LightBackground}
i - insert at cursor (goes into insert mode) & ESC - Terminate insert mode \tn 
% Row Count 3 (+ 3)
% Row 1
\SetRowColor{white}
a - write after cursor (goes into insert mode) & u - undo last change \tn 
% Row Count 6 (+ 3)
% Row 2
\SetRowColor{LightBackground}
A - Write at the end of line (goes into insert mode) & U - undo all changes to the entire line \tn 
% Row Count 9 (+ 3)
% Row 3
\SetRowColor{white}
dd - delete line & o - open a new line (goes into insert mode \tn 
% Row Count 12 (+ 3)
% Row 4
\SetRowColor{LightBackground}
3dd - delete 3 lines & C - delete contents of a line after the cursor and insert new text \tn 
% Row Count 16 (+ 4)
% Row 5
\SetRowColor{white}
dw - delete word & r - replace character \tn 
% Row Count 18 (+ 2)
% Row 6
\SetRowColor{LightBackground}
4dw - delete 4 words & R - overwrite characters from cursor onward \tn 
% Row Count 21 (+ 3)
% Row 7
\SetRowColor{white}
cw - change word & s - substitute one character under cursor continue to insert \tn 
% Row Count 24 (+ 3)
% Row 8
\SetRowColor{LightBackground}
x - delete character at the cursor & S - Substitute entire line and begin to insert at the beginning of the line \tn 
% Row Count 28 (+ 4)
% Row 9
\SetRowColor{white}
\mymulticolumn{2}{x{5.377cm}}{\textasciitilde{}\textasciitilde{} change case of individual character} \tn 
% Row Count 29 (+ 1)
\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}{Vi Editor - moving with a file}}  \tn
% Row 0
\SetRowColor{LightBackground}
k - move cursor up & h - move cursor left \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
j - move cursor down & l - move cursor right \tn 
% Row Count 3 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{2.78712 cm} x{2.18988 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Vi Editor - Saving and Closing the file}}  \tn
% Row 0
\SetRowColor{LightBackground}
Shift+zz: save the file and quit & :q - quit without  saving \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
:w - save the file but keep it open & :wq - save the file and quit \tn 
% Row Count 4 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{2.4885 cm} x{2.4885 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Misc}}  \tn
% Row 0
\SetRowColor{LightBackground}
\textgreater{} : send output to file or another device & \textgreater{}\textgreater{} : appends new file to an existing file \tn 
% Row Count 3 (+ 3)
% Row 1
\SetRowColor{white}
\textless{} : reverse redirection, takes input for program from existing file instead of keyboard & \textgreater{} : redirection, combined with system commands to achieve any desired results \tn 
% Row Count 8 (+ 5)
% Row 2
\SetRowColor{LightBackground}
!! : current history & wc : word count \tn 
% Row Count 9 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{2.63781 cm} x{2.33919 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Bash/Nano Shortcuts}}  \tn
% Row 0
\SetRowColor{LightBackground}
Ctrl-c: stop current command & Ctrl-a: go to start of line \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
Ctrl-z: sleep program & Ctrl-e: go to end of line \tn 
% Row Count 4 (+ 2)
% Row 2
\SetRowColor{LightBackground}
Ctrl-u: cut from start of line & Ctrl-k: cut to end of line \tn 
% Row Count 6 (+ 2)
% Row 3
\SetRowColor{white}
Ctrl-R: read file & Ctrl-O: save file \tn 
% Row Count 7 (+ 1)
% Row 4
\SetRowColor{LightBackground}
Alt-A; start marking text & Ctrl-X: close file \tn 
% Row Count 9 (+ 2)
% Row 5
\SetRowColor{white}
Ctrl-K: cut marked text or line & Ctrl-U: paste text \tn 
% Row Count 11 (+ 2)
% Row 6
\SetRowColor{LightBackground}
ALT-/ End of file & CTRL-E: End of line \tn 
% Row Count 13 (+ 2)
% Row 7
\SetRowColor{white}
CTRL-A: Beginning of line & CTRL-C: Show line number \tn 
% Row Count 15 (+ 2)
% Row 8
\SetRowColor{LightBackground}
CTRL-W: Find & ALT-W: Find next \tn 
% Row Count 16 (+ 1)
% Row 9
\SetRowColor{white}
\mymulticolumn{2}{x{5.377cm}}{CTRL-\textbackslash{}: Search and replace} \tn 
% Row Count 17 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{2.4885 cm} x{2.4885 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{User Information and Management}}  \tn
% Row 0
\SetRowColor{LightBackground}
\# Display the user and group ids of your current user. & \# Display the last users who have logged onto the system. \tn 
% Row Count 3 (+ 3)
% Row 1
\SetRowColor{white}
id & last \tn 
% Row Count 4 (+ 1)
% Row 2
\SetRowColor{LightBackground}
\# Show who is logged into the system. & \# Show who is logged in and what they are doing. \tn 
% Row Count 7 (+ 3)
% Row 3
\SetRowColor{white}
who & w \tn 
% Row Count 8 (+ 1)
% Row 4
\SetRowColor{LightBackground}
\# Create a group named "test". & \# Create an account named john, with a comment of "John Smith" and create the user's home directory. \tn 
% Row Count 14 (+ 6)
% Row 5
\SetRowColor{white}
groupadd test & useradd -c "John Smith" -m john \tn 
% Row Count 16 (+ 2)
% Row 6
\SetRowColor{LightBackground}
\# Delete the john account. & \# Add the john account to the sales group \tn 
% Row Count 19 (+ 3)
% Row 7
\SetRowColor{white}
userdel john & usermod -aG sales john \tn 
% Row Count 21 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{2.53827 cm} x{2.43873 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{System Information}}  \tn
% Row 0
\SetRowColor{LightBackground}
\#Display Linux system information & \#Show system host name \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
uname -a & hostname \tn 
% Row Count 3 (+ 1)
% Row 2
\SetRowColor{LightBackground}
\#Display kernel release information & \# Display the IP addresses of the host \tn 
% Row Count 5 (+ 2)
% Row 3
\SetRowColor{white}
uname -r & hostname -I \tn 
% Row Count 6 (+ 1)
% Row 4
\SetRowColor{LightBackground}
\# Show which version of redhat installed & \#Show the current date and time date \tn 
% Row Count 8 (+ 2)
% Row 5
\SetRowColor{white}
cat /etc/redhat-release & date \tn 
% Row Count 10 (+ 2)
% Row 6
\SetRowColor{LightBackground}
\# Who you are logged in as & \# Display who is online \tn 
% Row Count 12 (+ 2)
% Row 7
\SetRowColor{white}
whoami & w \tn 
% Row Count 13 (+ 1)
% Row 8
\SetRowColor{LightBackground}
\# Show this month's calendar & \# Show system host name \tn 
% Row Count 15 (+ 2)
% Row 9
\SetRowColor{white}
cal & hostname \tn 
% Row Count 16 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{2.4885 cm} x{2.4885 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Search + SSH Logins}}  \tn
% Row 0
\SetRowColor{LightBackground}
\#Search for pattern in file: grep pattern file & \# Search recursively for pattern in directory: grep -r pattern directory \tn 
% Row Count 4 (+ 4)
% Row 1
\SetRowColor{white}
\# Find files and directories by name: locate name & \# Find files in /home/john that start with "prefix": find /home/john -name 'prefix*' \tn 
% Row Count 9 (+ 5)
% Row 2
\SetRowColor{LightBackground}
\# Find files larger than 100MB in /home: find /home -size +100M & \# Connect to host as your local username: ssh host \tn 
% Row Count 13 (+ 4)
% Row 3
\SetRowColor{white}
\# Connect to host as user: ssh user@host & \# Connect to host using port: ssh -p port user@host \tn 
% Row Count 16 (+ 3)
% Row 4
\SetRowColor{LightBackground}
grep 'word' filename – Search any line that contains the word in filename on Linux & grep -i 'bar' file1 – A case-insensitive search for the word 'bar' in Linux and Unix \tn 
% Row Count 21 (+ 5)
% Row 5
\SetRowColor{white}
grep -R 'foo' . – Search all files in the current directory and in all of its subdirectories in Linux for the word 'foo' & grep -c 'nixcraft' frontpage.md – Search and display the total number of times that the string 'nixcraft' appears in a file named frontpage.md \tn 
% Row Count 29 (+ 8)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{2.4885 cm} x{2.4885 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{File and Directory Commands}}  \tn
% Row 0
\SetRowColor{LightBackground}
\# List all files in a long listing (detailed) format & \# Display the present working directory \tn 
% Row Count 3 (+ 3)
% Row 1
\SetRowColor{white}
ls -al & pwd \tn 
% Row Count 4 (+ 1)
% Row 2
\SetRowColor{LightBackground}
\# Create a directory & \# Remove (delete) file \tn 
% Row Count 6 (+ 2)
% Row 3
\SetRowColor{white}
mkdri directory & rm file \tn 
% Row Count 7 (+ 1)
% Row 4
\SetRowColor{LightBackground}
\# Remove the directory and its contents recursively & \# Force removal of file without prompting for confirmation \tn 
% Row Count 10 (+ 3)
% Row 5
\SetRowColor{white}
rm -r directory & rm -f file \tn 
% Row Count 11 (+ 1)
% Row 6
\SetRowColor{LightBackground}
\# Forcefully remove directory recursively & \#Copy file1 to file2 \tn 
% Row Count 14 (+ 3)
% Row 7
\SetRowColor{white}
rm -rf directory & cp file1 file2 \tn 
% Row Count 15 (+ 1)
% Row 8
\SetRowColor{LightBackground}
\# Copy source\_directory recursively to destination. If destination exists, copy source\_directory into destination, otherwise create destination with the contents of source\_directory. & \# Rename or move file1 to file2. If file2 is an existing directory, move file1 into directory file2 \tn 
% Row Count 25 (+ 10)
% Row 9
\SetRowColor{white}
cp -r source\_directory destination & mv file1 file2 \tn 
% Row Count 27 (+ 2)
% Row 10
\SetRowColor{LightBackground}
\# Create symbolic link to linkname & \# Create an empty file or update the access and modification times of file. \tn 
% Row Count 31 (+ 4)
\end{tabularx}
\par\addvspace{1.3em}

\vfill
\columnbreak
\begin{tabularx}{5.377cm}{x{2.4885 cm} x{2.4885 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{File and Directory Commands (cont)}}  \tn
% Row 11
\SetRowColor{LightBackground}
ln -s /path/to/file linkname & touch file \tn 
% Row Count 2 (+ 2)
% Row 12
\SetRowColor{white}
\# Display the first/last 10 lines of file & \#View/browse the contents of file \tn 
% Row Count 5 (+ 3)
% Row 13
\SetRowColor{LightBackground}
head line/tail line & cat file/less file \tn 
% Row Count 6 (+ 1)
% Row 14
\SetRowColor{white}
\# Display the last 10 lines of file and "follow" the file as it grows. & tail -f file \tn 
% Row Count 10 (+ 4)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{2.78712 cm} x{2.18988 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{File Attributes}}  \tn
% Row 0
\SetRowColor{LightBackground}
user group/other permissions - link account - user - group - filesize - date - filename & r : read, w : write, x - excute \tn 
% Row Count 4 (+ 4)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{2.4885 cm} x{2.4885 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Vi Editor 2}}  \tn
% Row 0
\SetRowColor{LightBackground}
/ to find & \textbackslash{}\textgreater{} : searches for the next word that ends with a specific string \tn 
% Row Count 4 (+ 4)
% Row 1
\SetRowColor{white}
{[}{]} : finds the characters between brackets & /\textless{} : searches for the next word that begins with a specific string \tn 
% Row Count 8 (+ 4)
% Row 2
\SetRowColor{LightBackground}
\$: searches for the line that ends with  a specific character & :! - leave vi tempo \tn 
% Row Count 12 (+ 4)
% Row 3
\SetRowColor{white}
:q - cancel an editing session & :wq  - write changes to disk and exit vi \tn 
% Row Count 14 (+ 2)
% Row 4
\SetRowColor{LightBackground}
ZZ: in command mode, save changes and exit vi & u : undo most recent change \tn 
% Row Count 17 (+ 3)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{2.4885 cm} x{2.4885 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Vi Editor 2}}  \tn
% Row 0
\SetRowColor{LightBackground}
/ to find & \textbackslash{}\textgreater{} : searches for the next word that ends with a specific string \tn 
% Row Count 4 (+ 4)
% Row 1
\SetRowColor{white}
{[}{]} : finds the characters between brackets & /\textless{} : searches for the next word that begins with a specific string \tn 
% Row Count 8 (+ 4)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{2.4885 cm} x{2.4885 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Vi Editor 2}}  \tn
% Row 0
\SetRowColor{LightBackground}
/ to find & \textbackslash{}\textgreater{} : searches for the next word that ends with a specific string \tn 
% Row Count 4 (+ 4)
% Row 1
\SetRowColor{white}
{[}{]} : finds the characters between brackets & /\textless{} : searches for the next word that begins with a specific string \tn 
% Row Count 8 (+ 4)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}


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

\end{document}