\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{Wayland He (Wayland He)}
\pdfinfo{
  /Title (personal.pdf)
  /Creator (Cheatography)
  /Author (Wayland He (Wayland He))
  /Subject (Personal 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{Personal Cheat Sheet}}}} \\
    \normalsize{by \textcolor{DarkBackground}{Wayland He (Wayland He)} via \textcolor{DarkBackground}{\uline{cheatography.com/24773/cs/6475/}}}
\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}Wayland He (Wayland He) \\
  \uline{cheatography.com/wayland-he} \\
        \uline{\seqsplit{github}.com/waylandhe}
  \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 December, 2015.\\
   Updated 21st June, 2017.\\
   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{tabularx}{17.67cm}{x{7.4261 cm} x{9.8439 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{17.67cm}}{\bf\textcolor{white}{Rails}}  \tn
% Row 0
\SetRowColor{LightBackground}
rails server {[}-b \$IP -p \$PORT{]} & start server \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
\mymulticolumn{2}{x{17.67cm}}{rails generate scaffold {\emph{table}} {\emph{column}}:{\emph{type}} ...} \tn 
% Row Count 4 (+ 2)
% Row 2
\SetRowColor{LightBackground}
rails {[}{\emph{version}}{]} new {\emph{name}} & create new rails app \tn 
% Row Count 6 (+ 2)
% Row 3
\SetRowColor{white}
bundle install & install gems in Gemfile. updates Gemfile.lock \tn 
% Row Count 9 (+ 3)
% Row 4
\SetRowColor{LightBackground}
bundle exec {\emph{command}} & run command with gems from Gemfile.lock \tn 
% Row Count 11 (+ 2)
% Row 5
\SetRowColor{white}
bundle update & update list of gems \tn 
% Row Count 12 (+ 1)
% Row 6
\SetRowColor{LightBackground}
rails console & opens up access to models \tn 
% Row Count 14 (+ 2)
% Row 7
\SetRowColor{white}
\mymulticolumn{2}{x{17.67cm}}{-{}-{}-{}-- Rails Shortcuts -{}-{}-{}-} \tn 
% Row Count 15 (+ 1)
% Row 8
\SetRowColor{LightBackground}
rails server & rails s \tn 
% Row Count 16 (+ 1)
% Row 9
\SetRowColor{white}
rails console & rails c \tn 
% Row Count 17 (+ 1)
% Row 10
\SetRowColor{LightBackground}
rails generate & rails g \tn 
% Row Count 18 (+ 1)
% Row 11
\SetRowColor{white}
bundle install & bundle \tn 
% Row Count 19 (+ 1)
% Row 12
\SetRowColor{LightBackground}
rake test & rake \tn 
% Row Count 20 (+ 1)
% Row 13
\SetRowColor{white}
\mymulticolumn{2}{x{17.67cm}}{rails generate controller {\emph{action}} ...} \tn 
% Row Count 21 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{17.67cm}}{bundle - gem install bundler {\emph{view}}}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{17.67cm}{x{8.635 cm} x{8.635 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{17.67cm}}{\bf\textcolor{white}{Git}}  \tn
% Row 0
\SetRowColor{LightBackground}
git push -{}-set-upstream {\emph{remote}} {\emph{branch}} & link current branch to remote branch \tn 
% Row Count 3 (+ 3)
% Row 1
\SetRowColor{white}
git push -u origin {\emph{branch}} & create and link branch remotely \tn 
% Row Count 5 (+ 2)
% Row 2
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{17.67cm}}{git config {[}-{}-global{]} user.name {\emph{name}}} \tn 
% Row Count 6 (+ 1)
% Row 3
\SetRowColor{white}
\mymulticolumn{2}{x{17.67cm}}{git config {[}-{}-global{]} user.email {\emph{email}}} \tn 
% Row Count 7 (+ 1)
% Row 4
\SetRowColor{LightBackground}
git clone \textless{}repo\textgreater{} {[}\textless{}dir\textgreater{}{]} & clone \textless{}repo\textgreater{} with \textless{}dir\textgreater{} name \tn 
% Row Count 9 (+ 2)
% Row 5
\SetRowColor{white}
\mymulticolumn{2}{x{17.67cm}}{git revert \textless{}commit\textgreater{}} \tn 
% Row Count 10 (+ 1)
% Row 6
\SetRowColor{LightBackground}
git diff master...\textless{}branch\textgreater{} & difference between \textless{}branch\textgreater{} and where \textless{}branch\textgreater{} diverged from master \tn 
% Row Count 14 (+ 4)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{17.67cm}{p{1.727 cm} p{1.727 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{17.67cm}}{\bf\textcolor{white}{gem}}  \tn
% Row 0
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{17.67cm}}{gem list {\emph{gem}}} \tn 
% Row Count 1 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{17.67cm}{x{6.7353 cm} x{10.5347 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{17.67cm}}{\bf\textcolor{white}{Heroku}}  \tn
% Row 0
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{17.67cm}}{heroku version} \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
\mymulticolumn{2}{x{17.67cm}}{heroku login} \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{17.67cm}}{heroku keys:add} \tn 
% Row Count 3 (+ 1)
% Row 3
\SetRowColor{white}
\mymulticolumn{2}{x{17.67cm}}{heroku create {[}{\emph{name}}{]}} \tn 
% Row Count 4 (+ 1)
% Row 4
\SetRowColor{LightBackground}
heroku open & opens running app in browser \tn 
% Row Count 6 (+ 2)
% Row 5
\SetRowColor{white}
\mymulticolumn{2}{x{17.67cm}}{heroku rename {\emph{name}}} \tn 
% Row Count 7 (+ 1)
% Row 6
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{17.67cm}}{heroku logs} \tn 
% Row Count 8 (+ 1)
% Row 7
\SetRowColor{white}
git push heroku master & rebuild/rerun app with latest code? \tn 
% Row Count 10 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{17.67cm}{x{6.908 cm} x{10.362 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{17.67cm}}{\bf\textcolor{white}{Rake}}  \tn
% Row 0
\SetRowColor{LightBackground}
rake -T {[}{\emph{namespace}}{]} & display all tasks {[}in namespace{]} \tn 
% Row Count 2 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{17.67cm}{x{7.7715 cm} x{9.4985 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{17.67cm}}{\bf\textcolor{white}{Rubocop}}  \tn
% Row 0
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{17.67cm}}{rubocop -{}-auto-gen-config} \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
rubocop -a & auto cleanup \tn 
% Row Count 2 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{17.67cm}{p{1.727 cm} p{1.727 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{17.67cm}}{\bf\textcolor{white}{Active Record}}  \tn
% Row 0
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{17.67cm}}{\seqsplit{ContentDefinition.where('display\_name} NOT LIKE (?)', {[}'test\%'{]})} \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
\mymulticolumn{2}{x{17.67cm}}{{\emph{Collection}}.delete\_all} \tn 
% Row Count 3 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{17.67cm}{x{14.1614 cm} p{3.1086 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{17.67cm}}{\bf\textcolor{white}{Work}}  \tn
% Row 0
\SetRowColor{LightBackground}
lsof -wni tcp:9292 & NS \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
lsof -wni tcp:7999 & AUTH \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
lsof -wni tcp:8081 & RLS \tn 
% Row Count 3 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{17.67cm}}{kill -9 {\emph{PID}}}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{17.67cm}{p{1.727 cm} p{1.727 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{17.67cm}}{\bf\textcolor{white}{Ruby Version Manager (RVM)}}  \tn
% Row 0
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{17.67cm}}{rvm use X} \tn 
% Row Count 1 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{17.67cm}}{X = version you want to use, such as 2.1.4}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{17.67cm}{x{11.3982 cm} x{5.8718 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{17.67cm}}{\bf\textcolor{white}{Minitest}}  \tn
% Row 0
\SetRowColor{LightBackground}
ruby path/to/file.rb -{}-name test\_method\_name & Run one specific test \tn 
% Row Count 2 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}



\end{document}