\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{Spec}
\pdfinfo{
  /Title (sheeeeeeeeeeet.pdf)
  /Creator (Cheatography)
  /Author (Spec)
  /Subject (Sheeeeeeeeeeet Cheat Sheet)
}

% Lengths and widths
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\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}{262626}
\definecolor{LightBackground}{HTML}{F8F8F8}
\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{Sheeeeeeeeeeet Cheat Sheet}}}} \\
    \normalsize{by \textcolor{DarkBackground}{Spec} via \textcolor{DarkBackground}{\uline{cheatography.com/21500/cs/4158/}}}
\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}Spec \\
  \uline{cheatography.com/spec} \\
  \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 24th 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*}{3}

\begin{tabularx}{5.377cm}{x{2.38896 cm} x{2.58804 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{\{\{fa-edit\}\} vim}}  \tn
% Row 0
\SetRowColor{LightBackground}
zo & open folded text \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
zc & close folded text \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
zr & unfold one level \tn 
% Row Count 3 (+ 1)
% Row 3
\SetRowColor{white}
zm & fold one level \tn 
% Row Count 4 (+ 1)
% Row 4
\SetRowColor{LightBackground}
zR & unfold all \tn 
% Row Count 5 (+ 1)
% Row 5
\SetRowColor{white}
zM & fold all \tn 
% Row Count 6 (+ 1)
% Row 6
\SetRowColor{LightBackground}
c-w w & switch window \tn 
% Row Count 7 (+ 1)
% Row 7
\SetRowColor{white}
ctrl-w s & split windows \tn 
% Row Count 8 (+ 1)
% Row 8
\SetRowColor{LightBackground}
c-w v & split vertically \tn 
% Row Count 9 (+ 1)
% Row 9
\SetRowColor{white}
c-w q & quit window \tn 
% Row Count 10 (+ 1)
% Row 10
\SetRowColor{LightBackground}
`:set list` & show characters \tn 
% Row Count 11 (+ 1)
% Row 11
\SetRowColor{white}
do & diff obtain \tn 
% Row Count 12 (+ 1)
% Row 12
\SetRowColor{LightBackground}
dp & diff put \tn 
% Row Count 13 (+ 1)
% Row 13
\SetRowColor{white}
`:set diffopt+=iwhite` & avoid whitespace in diff \tn 
% Row Count 15 (+ 2)
% Row 14
\SetRowColor{LightBackground}
`:diffu` & refresh differences \tn 
% Row Count 16 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{5.377cm}}{{\bf{Auto wrap text:}} \newline 1. `:set textwidth=80` \newline 2. select text in visual mode \newline 3. `gq`}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{1.04517 cm} x{3.93183 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{\{\{fa-filter\}\} regex}}  \tn
% Row 0
\SetRowColor{LightBackground}
{[}{\bf{\textasciicircum{}}}bg{]} & caret negates expression \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
\textbackslash{}s & whitespace \tn 
% Row Count 3 (+ 1)
% Row 2
\SetRowColor{LightBackground}
\textbackslash{}S & not whitespace \tn 
% Row Count 4 (+ 1)
% Row 3
\SetRowColor{white}
\textbackslash{}d & digit \tn 
% Row Count 5 (+ 1)
% Row 4
\SetRowColor{LightBackground}
\textbackslash{}D & not digi \tn 
% Row Count 6 (+ 1)
% Row 5
\SetRowColor{white}
\textbackslash{}w & word \tn 
% Row Count 7 (+ 1)
% Row 6
\SetRowColor{LightBackground}
\textbackslash{}x & hexadecimal digit \tn 
% Row Count 8 (+ 1)
% Row 7
\SetRowColor{white}
\textbackslash{}O & octal digit \tn 
% Row Count 9 (+ 1)
% Row 8
\SetRowColor{LightBackground}
(?:...) & Passive (non-capturing) group \tn 
% Row Count 11 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{2.09034 cm} x{2.88666 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{\{\{fa-gear\}\} screen}}  \tn
% Row 0
\SetRowColor{LightBackground}
C-a S & split horizontally \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
C-a | or C-a V & split vertically \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
C-a tab & jump to next region \tn 
% Row Count 3 (+ 1)
% Row 3
\SetRowColor{white}
C-a X & close region \tn 
% Row Count 4 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{p{0.4577 cm} x{1.51041 cm} x{2.60889 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{3}{x{5.377cm}}{\bf\textcolor{white}{\{\{fa-linux\}\} Syslog severity levels}}  \tn
% Row 0
\SetRowColor{LightBackground}
0 & emerg & Emergency \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
1 & alert & Alert \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
2 & crit & Critical \tn 
% Row Count 3 (+ 1)
% Row 3
\SetRowColor{white}
3 & err & Error \tn 
% Row Count 4 (+ 1)
% Row 4
\SetRowColor{LightBackground}
4 & warning & Warning \tn 
% Row Count 5 (+ 1)
% Row 5
\SetRowColor{white}
5 & notice & Notice \tn 
% Row Count 6 (+ 1)
% Row 6
\SetRowColor{LightBackground}
6 & info & Informational \tn 
% Row Count 7 (+ 1)
% Row 7
\SetRowColor{white}
7 & debug & Debug \tn 
% Row Count 8 (+ 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}{\{\{fa-random\}\} IO redirection}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{{\bf{Output of cmd2 as file input to cmd1:}} \newline % Row Count 1 (+ 1)
`cmd1 \textless{}(cmd2)` \newline % Row Count 2 (+ 1)
{\bf{Stderr of cmd to file:}} \newline % Row Count 3 (+ 1)
`cmd 2\textgreater{} file` \newline % Row Count 4 (+ 1)
{\bf{Stdout to same place as stderr:}} \newline % Row Count 5 (+ 1)
`cmd 1\textgreater{}\&2` \newline % Row Count 6 (+ 1)
{\bf{All output of cmd to file:}} \newline % Row Count 7 (+ 1)
`cmd \&\textgreater{} file` \newline % Row Count 8 (+ 1)
{\bf{stderr of cmd1 to cmd2:}} \newline % Row Count 9 (+ 1)
`cmd1 |\& cmd2`% Row Count 10 (+ 1)
} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{\{\{fa-code\}\} DH Groups}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{DH Group 1: 768-bit group \newline % Row Count 1 (+ 1)
DH Group 2: 1024-bit group \newline % Row Count 2 (+ 1)
DH Group 5: 1536-bit group \newline % Row Count 3 (+ 1)
DH Group 14: 2048-bit group \newline % Row Count 4 (+ 1)
DH Group 15: 3072-bit group \newline % Row Count 5 (+ 1)
DH Group 19: 256-bit elliptic curve group \newline % Row Count 6 (+ 1)
DH Group 20: 384-bit elliptic curve group% Row Count 7 (+ 1)
} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{{\bf{IPsec VPN:}} \newline UDP 500 (IKE includes ISAKMP) \newline UDP 4500 (NAT traversal) \newline IP protocol 50 (ESP) \newline IP protocol 51 (AH)}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{1.44333 cm} x{3.53367 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{\{\{fa-sitemap\}\} nmap}}  \tn
% Row 0
\SetRowColor{LightBackground}
-sn & no port scan \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
-PE & only ICMP echo for host disc. \tn 
% Row Count 3 (+ 2)
% Row 2
\SetRowColor{LightBackground}
-Pn & no ping \tn 
% Row Count 4 (+ 1)
% Row 3
\SetRowColor{white}
-n & no name resolve \tn 
% Row Count 5 (+ 1)
% Row 4
\SetRowColor{LightBackground}
-p80,443 & scan port 80 and 443 \tn 
% Row Count 6 (+ 1)
% Row 5
\SetRowColor{white}
-p- & scan all ports \tn 
% Row Count 7 (+ 1)
% Row 6
\SetRowColor{LightBackground}
-e {\emph{\textless{}IFACE\textgreater{}}} & use specified interface \tn 
% Row Count 9 (+ 2)
% Row 7
\SetRowColor{white}
-O & OS detection \tn 
% Row Count 10 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{1.14471 cm} x{3.83229 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{\{\{fa-sitemap\}\} tcpdump}}  \tn
% Row 0
\SetRowColor{LightBackground}
-A & payload in ASCII \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
-c \textless{}count\textgreater{} & exit after {\emph{count}} packets \tn 
% Row Count 3 (+ 2)
% Row 2
\SetRowColor{LightBackground}
-e & print link level headers \tn 
% Row Count 4 (+ 1)
% Row 3
\SetRowColor{white}
-G \textless{}n\textgreater{} & rotate dump file every {\emph{n}} sec \tn 
% Row Count 5 (+ 1)
% Row 4
\SetRowColor{LightBackground}
-s \textless{}len\textgreater{} & snip first {\emph{len}} bytes per packet \tn 
% Row Count 7 (+ 2)
% Row 5
\SetRowColor{white}
-S & absolute TCP seq numbers \tn 
% Row Count 8 (+ 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}{random}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{{\bf{Backuppaa ACL:t:}} \newline % Row Count 1 (+ 1)
`getfacl -pR /joku/hakemisto \textgreater{} permissions.acl` \newline % Row Count 2 (+ 1)
`setfacl -{}-restore=permissions.acl` \newline % Row Count 3 (+ 1)
{\bf{Listaa ladattavat moduulit:}} \newline % Row Count 4 (+ 1)
`cat /lib/modules/\$(uname -r)/modules.dep` \newline % Row Count 5 (+ 1)
{\bf{TCP portit:}} \newline % Row Count 6 (+ 1)
`0-1023` - well-known ports \newline % Row Count 7 (+ 1)
`1024-49151` - registered port \newline % Row Count 8 (+ 1)
`49152-65535` - dynamic / private ports \newline % Row Count 9 (+ 1)
{\bf{SSL netcat:}} \newline % Row Count 10 (+ 1)
`openssl s\_client -connect localhost:995` \newline % Row Count 11 (+ 1)
{\bf{Maalaa osumat:}} \newline % Row Count 12 (+ 1)
`grep -E -{}-color '(\textasciicircum{}|haku)'` \newline % Row Count 13 (+ 1)
{\bf{Unix epoch aika:}} \newline % Row Count 14 (+ 1)
`date +\%s` \newline % Row Count 15 (+ 1)
`date -d @1268727836`% Row Count 16 (+ 1)
} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{1.24425 cm} x{3.73275 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{\{\{fa-filter\}\} sed: address notation}}  \tn
% Row 0
\SetRowColor{LightBackground}
n & line number \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
\$ & last line \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
/regexp/ & lines matching the pattern \tn 
% Row Count 3 (+ 1)
% Row 3
\SetRowColor{white}
addr1,addr2 & range of lines \tn 
% Row Count 5 (+ 2)
% Row 4
\SetRowColor{LightBackground}
10\textasciitilde{}2 & start `10`, then by `2` intervals \tn 
% Row Count 7 (+ 2)
% Row 5
\SetRowColor{white}
addr1,+n & `addr1` and following `n` lines \tn 
% Row Count 9 (+ 2)
% Row 6
\SetRowColor{LightBackground}
addr! & all lines except `addr` \tn 
% Row Count 10 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{5.377cm}}{sed -n '{\bf{1,5}}p' file.txt \newline sed '{\bf{1,5}}s/old/new' file.txt}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{1.24425 cm} x{3.73275 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{\{\{fa-filter\}\} sed: editing commands}}  \tn
% Row 0
\SetRowColor{LightBackground}
= & output line number \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
a & append text after line \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
d & delete line \tn 
% Row Count 3 (+ 1)
% Row 3
\SetRowColor{white}
p & print line, use -n to override \tn 
% Row Count 4 (+ 1)
% Row 4
\SetRowColor{LightBackground}
\seqsplit{s/old/new/} & substitute \tn 
% Row Count 5 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{5.377cm}}{`sed "1,10 {\bf{d}}" file.txt` \newline `sed "/snmp/ {\bf{a}} text to append" file.txt` \newline `sed -n "/snmp/ =" file.txt` \newline `sed -i -e '/suodata/\{s/etsi/korvaa/\}' file`}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{\{\{fa-code\}\} Bash: space split}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{{\bf{INPUT: "word" "spaces yo"}} \newline \${\emph{ ~~: \$1 = word, \$2 = spaces, ~~~\$3 = yo \newline "\$}}" : \$1 = word spaces yo, \$2 =, \$3 = \newline \$@ ~~: \$1 = word, \$2 = spaces, ~~~\$3 = yo \newline "\$@" : \$1 = word, \$2 = spaces yo, \$3 =} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{\{\{fa-code\}\} Bash: for in C Form}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{for (( i=0; i\textless{}5; i=i+1 )); do \newline ~~echo \$i \newline done} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{\{\{fa-code\}\} Bash: variable expansions}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{{\bf{Return {\emph{\$parameter}} or "{\emph{word}}" if empty:}} \newline % Row Count 1 (+ 1)
`\$\{parameter:-word\}` \newline % Row Count 2 (+ 1)
{\bf{Previous + set variable value if it's unset:}} \newline % Row Count 3 (+ 1)
`\$\{parameter:=word\}` \newline % Row Count 4 (+ 1)
{\bf{Exit script with {\emph{error message}} if empty:}} \newline % Row Count 5 (+ 1)
`\$\{parameter:?error message\}` \newline % Row Count 6 (+ 1)
{\bf{Results nothing if empty. If not empty, substitute and don't change variable value:}} \newline % Row Count 8 (+ 2)
`\$\{parameter:+word\}` \newline % Row Count 9 (+ 1)
{\bf{Return variable names:}} \newline % Row Count 10 (+ 1)
`\$\{!prefix*\}` \newline % Row Count 11 (+ 1)
{\bf{Return string length:}} \newline % Row Count 12 (+ 1)
`\$\{\#parameter\}` \newline % Row Count 13 (+ 1)
{\bf{Return substring:}} \newline % Row Count 14 (+ 1)
`\$\{parameter:offset\}` \newline % Row Count 15 (+ 1)
`\$\{parameter:offset:length\}` \newline % Row Count 16 (+ 1)
{\bf{Remove leading substring:}} \newline % Row Count 17 (+ 1)
`\$\{parameter\#pattern\}` {\emph{(shortest match)}} \newline % Row Count 18 (+ 1)
`\$\{parameter\#\#pattern\}` {\emph{(longest match)}} \newline % Row Count 19 (+ 1)
{\bf{Remove trailing substring:}} \newline % Row Count 20 (+ 1)
`\$\{parameter\%pattern\}` {\emph{(shortest match)}} \newline % Row Count 21 (+ 1)
`\$\{parameter\%\%pattern\}` {\emph{(longest match)}} \newline % Row Count 22 (+ 1)
{\bf{Search and replace. If string not set, delete matched text.}} \newline % Row Count 24 (+ 2)
{\bf{Only first occurence:}} \newline % Row Count 25 (+ 1)
`\$\{parameter/pattern/string\}` \newline % Row Count 26 (+ 1)
{\bf{All occurences:}} \newline % Row Count 27 (+ 1)
`\$\{parameter//pattern/string\}` \newline % Row Count 28 (+ 1)
{\bf{Match required at the beginning of string:}} \newline % Row Count 29 (+ 1)
`\$\{parameter/\#pattern/string\}` \newline % Row Count 30 (+ 1)
} \tn 
\end{tabularx}
\par\addvspace{1.3em}

\vfill
\columnbreak
\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{\{\{fa-code\}\} Bash: variable expansions (cont)}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{{\bf{Match required at the end of string:}} \newline % Row Count 1 (+ 1)
`\$\{parameter/\%pattern/string\}`% Row Count 2 (+ 1)
} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{2.38896 cm} x{2.58804 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{\{\{fa-code\}\} Bash: number bases}}  \tn
% Row 0
\SetRowColor{LightBackground}
{\bf{number}} & base 10 integer \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
0{\bf{number}} & base 8 octal \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
0x{\bf{number}} & base 16 hexadecimal \tn 
% Row Count 3 (+ 1)
% Row 3
\SetRowColor{white}
{\bf{base}}\#{\bf{number}} & {\emph{number}} is in {\emph{base}} \tn 
% Row Count 5 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{5.377cm}}{`echo \$((0xff))` \newline \{\{fa-caret-right\}\} 255 \newline `echo \$((2\#11111111))` \newline \{\{fa-caret-right\}\} 255}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{\{\{fa-code\}\} Bash: ternary operator}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{{\bf{expr1}}?{\bf{expr2}}:{\bf{expr3}}} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{If expression {\bf{{\emph{expr1}}}} evaluates to be non-zero (arithmetic true) then {\bf{{\emph{expr2}}}}, else {\bf{{\emph{expr3}}}}.}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{1.84149 cm} x{3.13551 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{\{\{fa-code\}\} Bash: case conversion}}  \tn
% Row 0
\SetRowColor{LightBackground}
\$\{parameter,,\} & All to lowercase. \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
\$\{parameter,\} & First char to lowercase. \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
\$\{parameter\textasciicircum{}\textasciicircum{}\} & All to uppercase. \tn 
% Row Count 3 (+ 1)
% Row 3
\SetRowColor{white}
\$\{parameter\textasciicircum{}\} & First char to uppercase. \tn 
% Row Count 4 (+ 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}{\{\{fa-code\}\} Bash: tests}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{{\bf{Pattern matching:}} \newline % Row Count 1 (+ 1)
`{[}{[} "foo.bar" == foo.* {]}{]}` \newline % Row Count 2 (+ 1)
{\bf{Regexp:}} \newline % Row Count 3 (+ 1)
`{[}{[} "\$INT" =\textasciitilde{} \textasciicircum{}-?{[}0-9{]}+\$ {]}{]}` \newline % Row Count 4 (+ 1)
{\bf{Arithmetic truth tests:}} \newline % Row Count 5 (+ 1)
`(( ((INT \% 2)) == 0))`% Row Count 6 (+ 1)
} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}


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

\end{document}