\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{Nestor (Nestor)}
\pdfinfo{
  /Title (openwrt.pdf)
  /Creator (Cheatography)
  /Author (Nestor (Nestor))
  /Subject (OpenWRT Cheat Sheet)
}

% Lengths and widths
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\setlength{\headheight}{85pt} % If less, LaTeX automatically increases it
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\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{OpenWRT Cheat Sheet}}}} \\
    \normalsize{by \textcolor{DarkBackground}{Nestor (Nestor)} via \textcolor{DarkBackground}{\uline{cheatography.com/22757/cs/4774/}}}
\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}Nestor (Nestor) \\
  \uline{cheatography.com/nestor} \\
  \end{tabulary}
\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
  \SetRowColor{FootBackground}
  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Cheat Sheet}}  \\
   \vspace{-2pt}Published 7th August, 2015.\\
   Updated 11th May, 2016.\\
   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*}{2}

\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{Uruchamianie usług}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{8.4cm}}{{\bf{OpenWRT}} posiada uproszczony mechanizm aktywacji usług: \newline % Row Count 2 (+ 2)
\seqsplit{`/etc/init.d/service-name} enable`% Row Count 3 (+ 1)
} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{Włączanie SSH na WAN}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{8.4cm}}{Domyślnie w {\bf{OpenWRT}} protokół {\bf{SSH}} jest obsługiwany przez program {\emph{dropbear}}. Warto wyłączyć logowanie z użyciem haseł: \newline % Row Count 3 (+ 3)
`config dropbear` \newline % Row Count 4 (+ 1)
`~~option PasswordAuth 'off'` \newline % Row Count 5 (+ 1)
`~~option Port  '22'` \newline % Row Count 6 (+ 1)
Powyższe można zmodyfikować poleceniem: \newline % Row Count 7 (+ 1)
`sed -i -e "s/'on'/'off'/"  /etc/config/dropbear` \newline % Row Count 8 (+ 1)
Dodatkowo, należy zmodyfikować plik `/etc/firewall.user`: \newline % Row Count 10 (+ 2)
`iptables -{}-append input\_wan -{}-protocol tcp -{}-dport 22 -{}-jump ACCEPT`% Row Count 12 (+ 2)
} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{Własne serwery DNS dla dnsmasq}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{8.4cm}}{Należy utworzyć plik `/etc/resolv.local` z adresami serwerów DNS. Następnie należy dodać opcję {\emph{resolv-file}} do pliku `dnsmasq.conf`: \newline % Row Count 3 (+ 3)
`echo \seqsplit{resolv-file=/etc/resolv.local} \textgreater{}\textgreater{} /etc/dnsmasq.conf` \newline % Row Count 5 (+ 2)
Po restarcie usługi, ustawienia będą aktywne: \newline % Row Count 6 (+ 1)
`/etc/init.d/dnsmasq restart`% Row Count 7 (+ 1)
} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{Odblokowanie partycji dla danych}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{8.4cm}}{Poniższe polecenie odblokowuje partycję danych: \newline % Row Count 1 (+ 1)
`mtd unlock rootfs\_data`% Row Count 2 (+ 1)
} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{Instalacja vim'a i screen'a}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{8.4cm}}{`opkg update` \newline % Row Count 1 (+ 1)
`opkg install vim screen`% Row Count 2 (+ 1)
} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{Instalacja WebGUI}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{8.4cm}}{W pierwszej kolejności należy zainstalować niezbędne pakiety: \newline % Row Count 2 (+ 2)
`opkg update` \newline % Row Count 3 (+ 1)
`opkg install luci` \newline % Row Count 4 (+ 1)
Następnie należy aktywować serwer WWW: \newline % Row Count 5 (+ 1)
`/etc/init.d/uhttpd enable` \newline % Row Count 6 (+ 1)
`/etc/init.d/uhttpd start`% Row Count 7 (+ 1)
} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{Wgrywanie nowego firmware z konsoli}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{8.4cm}}{Nowy obraz należy pobrać do katalogu `/tmp`: \newline % Row Count 1 (+ 1)
`cd /tmp` \newline % Row Count 2 (+ 1)
`wget` \seqsplit{`http://downloads.openwrt.org/nazwa\_pliku.bin`} \newline % Row Count 4 (+ 2)
Następnie można rozpocząc flashowanie: \newline % Row Count 5 (+ 1)
`mtd -r write nazwa\_pliku.bin firmware`% Row Count 6 (+ 1)
} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{Konfiguracja adresu IP}}  \tn
% Row 0
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{} \tn 
% Row Count 0 (+ 0)
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{W pliku /etc/config/network należy ustawić adres, np.: \newline option ipaddr 192.168.1.1 \newline Następnie restart konfiguracji sieci: \newline /etc/init.d/network restart.}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}


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

\end{document}