\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{nhatlong0605} \pdfinfo{ /Title (rhcsa-module1-basicsystemmanagementtasks.pdf) /Creator (Cheatography) /Author (nhatlong0605) /Subject (RHCSA\_Module1\_BasicSystemManagementTasks 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}{4353A3} \definecolor{LightBackground}{HTML}{F3F4F9} \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{RHCSA\_Module1\_BasicSystemManagementTasks Cheat Sheet}}}} \\ \normalsize{by \textcolor{DarkBackground}{nhatlong0605} via \textcolor{DarkBackground}{\uline{cheatography.com/68292/cs/22331/}}} \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}nhatlong0605 \\ \uline{cheatography.com/nhatlong0605} \\ \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 6th April, 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{1.64241 cm} x{3.33459 cm} } \SetRowColor{DarkBackground} \mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Essential Commands}} \tn % Row 0 \SetRowColor{LightBackground} pwd & Show current working dir \tn % Row Count 1 (+ 1) % Row 1 \SetRowColor{white} whoami & Show current username \tn % Row Count 2 (+ 1) % Row 2 \SetRowColor{LightBackground} ls & List files in dir \tn % Row Count 3 (+ 1) % Row 3 \SetRowColor{white} ip addr show & Show current IP config \tn % Row Count 4 (+ 1) % Row 4 \SetRowColor{LightBackground} free -m & Show how much memory you have \tn % Row Count 6 (+ 2) % Row 5 \SetRowColor{white} df -h & Show available diskspace \tn % Row Count 7 (+ 1) % Row 6 \SetRowColor{LightBackground} cat /etc/hosts & Show contents of file \tn % Row Count 9 (+ 2) % Row 7 \SetRowColor{white} findmnt & Show mounted file system \tn % Row Count 10 (+ 1) \hhline{>{\arrayrulecolor{DarkBackground}}--} \end{tabularx} \par\addvspace{1.3em} \begin{tabularx}{5.377cm}{p{0.54747 cm} x{4.42953 cm} } \SetRowColor{DarkBackground} \mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Linux File System Hierarchy}} \tn % Row 0 \SetRowColor{LightBackground} Note & Highly standardised, defined in FHS, maintained by Linux Foundation, starting point is root dir, other devices may be intergrated in FHS using mounts \tn % Row Count 5 (+ 5) % Row 1 \SetRowColor{white} / & root dir, mounted on the name of device \tn % Row Count 7 (+ 2) % Row 2 \SetRowColor{LightBackground} /boot & Boot dir \tn % Row Count 9 (+ 2) % Row 3 \SetRowColor{white} /home & Home Dir \tn % Row Count 11 (+ 2) % Row 4 \SetRowColor{LightBackground} /var & Variables dir \tn % Row Count 12 (+ 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}{Basic Permisisons}} \tn \SetRowColor{LightBackground} \mymulticolumn{1}{p{5.377cm}}{\vspace{1px}\centerline{\includegraphics[width=5.1cm]{/web/www.cheatography.com/public/uploads/nhatlong0605_1586145270_Screen Shot 2020-04-06 at 3.49.15 PM.png}}} \tn \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}{Globbing}} \tn % Row 0 \SetRowColor{LightBackground} * & Any character \tn % Row Count 1 (+ 1) % Row 1 \SetRowColor{white} ? & Only 1 character \tn % Row Count 2 (+ 1) % Row 2 \SetRowColor{LightBackground} {[}hm{]} & Either h or m \tn % Row Count 3 (+ 1) % Row 3 \SetRowColor{white} {[}!hm{]} & Neither h or m \tn % Row Count 4 (+ 1) % Row 4 \SetRowColor{LightBackground} {[}0=9{]}{[}0-9{]} & Wildcard all 2 digit number \tn % Row Count 5 (+ 1) \hhline{>{\arrayrulecolor{DarkBackground}}--} \end{tabularx} \par\addvspace{1.3em} \begin{tabularx}{5.377cm}{x{1.09494 cm} x{3.88206 cm} } \SetRowColor{DarkBackground} \mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Regular Expressions}} \tn % Row 0 \SetRowColor{LightBackground} {\emph{NOTE}} & Different than globbing (For file name), REGEX is for searching text pattern, best to use '', use with specific tools {\bf{GREP,VIM,SED,AWK}}, \tn % Row Count 5 (+ 5) % Row 1 \SetRowColor{white} grep 'b.t' & Find pattern with b in first position, anything in second and t in third position \tn % Row Count 8 (+ 3) % Row 2 \SetRowColor{LightBackground} grep 'b.*t' & Pattern with b in the first, may or may not have 1 or many character and t in last postion \tn % Row Count 11 (+ 3) % Row 3 \SetRowColor{white} grep 'bo*t' & Pattern with b in first, may or may not have 'o' and t in last postion \tn % Row Count 14 (+ 3) % Row 4 \SetRowColor{LightBackground} grep 'b.?t' & No result, ? is part of extended REGEX, need to be used with {\emph{EGREP}} \tn % Row Count 17 (+ 3) % Row 5 \SetRowColor{white} \textbackslash{}\textless{} & Beginning of word \tn % Row Count 18 (+ 1) % Row 6 \SetRowColor{LightBackground} \textbackslash{}\textgreater{} & End of word \tn % Row Count 19 (+ 1) % Row 7 \SetRowColor{white} \{n\} & Exactly n times \tn % Row Count 20 (+ 1) \hhline{>{\arrayrulecolor{DarkBackground}}--} \end{tabularx} \par\addvspace{1.3em} % That's all folks \end{multicols*} \end{document}