\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{rebecca-burwei}
\pdfinfo{
  /Title (beginner-bash.pdf)
  /Creator (Cheatography)
  /Author (rebecca-burwei)
  /Subject (Beginner Bash Cheat Sheet)
}

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% This two commands together give roughly
% the right line height in the tables
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% 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
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\newcommand{\tn}{\tabularnewline} % Required as custom column type in use

% Font and Colours
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\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{Beginner Bash Cheat Sheet}}}} \\
    \normalsize{by \textcolor{DarkBackground}{rebecca-burwei} via \textcolor{DarkBackground}{\uline{cheatography.com/121026/cs/21996/}}}
\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}rebecca-burwei \\
  \uline{cheatography.com/rebecca-burwei} \\
  \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 31st March, 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*}{2}

\begin{tabularx}{8.4cm}{x{3.28 cm} x{4.72 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Builtin commands}}  \tn
% Row 0
\SetRowColor{LightBackground}
builtin & Uses builtin version of the command \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
cut -f{\emph{number}} -d{\emph{delimiter}} & Displays the column specified by number \tn 
% Row Count 4 (+ 2)
% Row 2
\SetRowColor{LightBackground}
disown & Removes processes from the shell's list of jobs. Removes the job id. \tn 
% Row Count 7 (+ 3)
% Row 3
\SetRowColor{white}
eval & Re-run CL processing on arguments. Can be used to run commands passed as variables. \tn 
% Row Count 11 (+ 4)
% Row 4
\SetRowColor{LightBackground}
fg \%{\emph{N}} & Bring the job with shell ID {\emph{N}} to the foreground \tn 
% Row Count 14 (+ 3)
% Row 5
\SetRowColor{white}
getopts & Parses positional parameters \tn 
% Row Count 16 (+ 2)
% Row 6
\SetRowColor{LightBackground}
grep -e & Regex searches for a pattern in lines in the argument files, or stdin if no files \tn 
% Row Count 20 (+ 4)
% Row 7
\SetRowColor{white}
jobs & List all jobs \tn 
% Row Count 21 (+ 1)
% Row 8
\SetRowColor{LightBackground}
printf & Prints a format string \tn 
% Row Count 22 (+ 1)
% Row 9
\SetRowColor{white}
read & Reads a line from stdin, spits it on `\$IFS` characters, and assigns it to shell variables \tn 
% Row Count 26 (+ 4)
% Row 10
\SetRowColor{LightBackground}
trap & When specified signals are received, run specified command instead and resume normal execution \tn 
% Row Count 31 (+ 5)
\end{tabularx}
\par\addvspace{1.3em}

\vfill
\columnbreak
\begin{tabularx}{8.4cm}{x{3.28 cm} x{4.72 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Builtin commands (cont)}}  \tn
% Row 11
\SetRowColor{LightBackground}
type & Displays paths of argument commands, aliases, functions, executables \tn 
% Row Count 3 (+ 3)
% Row 12
\SetRowColor{white}
wait & Waits for all background jobs to finish before finishing the script. \tn 
% Row Count 6 (+ 3)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{x{1.36 cm} x{6.64 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Emacs commands}}  \tn
% Row 0
\SetRowColor{LightBackground}
\seqsplit{CTRL-A} & Move to beginning of line \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
\seqsplit{CTRL-E} & Move to end of line \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
\seqsplit{CTRL-U} & Kill backward to beginning of line \tn 
% Row Count 4 (+ 2)
% Row 3
\SetRowColor{white}
\seqsplit{CTRL-K} & Kill forward to end of line \tn 
% Row Count 5 (+ 1)
% Row 4
\SetRowColor{LightBackground}
\seqsplit{CTRL-R} & Search backward \tn 
% Row Count 6 (+ 1)
% Row 5
\SetRowColor{white}
\seqsplit{CTRL-Y} & Retrieve (yank) last killed item \tn 
% Row Count 7 (+ 1)
% Row 6
\SetRowColor{LightBackground}
ESC-B & Move one word backward \tn 
% Row Count 8 (+ 1)
% Row 7
\SetRowColor{white}
ESC-F & Move one word forward \tn 
% Row Count 9 (+ 1)
% Row 8
\SetRowColor{LightBackground}
\seqsplit{ESC-DEL} & Kill one word backward \tn 
% Row Count 11 (+ 2)
% Row 9
\SetRowColor{white}
ESC-D & Kill one word forward \tn 
% Row Count 12 (+ 1)
% Row 10
\SetRowColor{LightBackground}
ESC-\textless{} & Move to first line of history list \tn 
% Row Count 14 (+ 2)
% Row 11
\SetRowColor{white}
ESC-\textgreater{} & Move to last line of history list \tn 
% Row Count 15 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{Environment files}}  \tn
% Row 0
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{.bash\_profile - Runs when a login shell starts.} \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
\mymulticolumn{1}{x{8.4cm}}{.bashrc - Runs when a subshell starts.} \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{.bash\_logout - Runs when a login shell exits.} \tn 
% Row Count 3 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{p{0.88 cm} x{7.12 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Special Characters}}  \tn
% Row 0
\SetRowColor{LightBackground}
\& & Background job \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
\# & Comment \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
\textasciitilde{} & Home directory \tn 
% Row Count 3 (+ 1)
% Row 3
\SetRowColor{white}
! & Logical NOT \tn 
% Row Count 4 (+ 1)
% Row 4
\SetRowColor{LightBackground}
' & Quote (strong). Skips all CL processing. \tn 
% Row Count 6 (+ 2)
% Row 5
\SetRowColor{white}
" & Quote (weak). Skips all CL processing except variable expansion, command substitution, arithmetic substitution. \tn 
% Row Count 10 (+ 4)
% Row 6
\SetRowColor{LightBackground}
\textless{} & Redirect input \tn 
% Row Count 11 (+ 1)
% Row 7
\SetRowColor{white}
\textgreater{} & Redirect output \tn 
% Row Count 12 (+ 1)
% Row 8
\SetRowColor{LightBackground}
\textgreater{}\textgreater{} & Redirect output and append to file \tn 
% Row Count 13 (+ 1)
% Row 9
\SetRowColor{white}
| & Redirect (pipe) output to next command \tn 
% Row Count 15 (+ 2)
% Row 10
\SetRowColor{LightBackground}
/ & Separator for pathname directories \tn 
% Row Count 16 (+ 1)
% Row 11
\SetRowColor{white}
; & Separator for shell commands. Use when EOL is missing. \tn 
% Row Count 18 (+ 2)
% Row 12
\SetRowColor{LightBackground}
{[} {]} & Start and end a character-set wildcard \tn 
% Row Count 20 (+ 2)
% Row 13
\SetRowColor{white}
\{ \} & Start and end a command block. Redirect I/O to a block of commands without starting a subprocess. \tn 
% Row Count 23 (+ 3)
% Row 14
\SetRowColor{LightBackground}
( ) & Start and end a subshell \tn 
% Row Count 24 (+ 1)
% Row 15
\SetRowColor{white}
(( )) & Perform arithmetic \tn 
% Row Count 26 (+ 2)
% Row 16
\SetRowColor{LightBackground}
* & Wildcard \tn 
% Row Count 27 (+ 1)
% Row 17
\SetRowColor{white}
? & Wildcard - single character \tn 
% Row Count 28 (+ 1)
% Row 18
\SetRowColor{LightBackground}
\$ & Variable expression \tn 
% Row Count 29 (+ 1)
% Row 19
\SetRowColor{white}
\textbackslash{} & Escape a special character (including RETURN) \tn 
% Row Count 31 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{x{1.36 cm} x{6.64 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{More I/O Redirectors}}  \tn
% Row 0
\SetRowColor{LightBackground}
{\emph{n}}\textgreater{}\&{\emph{m}} & File descriptor {\emph{n}} is made to be a copy of output file descriptor {\emph{m}} \tn 
% Row Count 3 (+ 3)
% Row 1
\SetRowColor{white}
{\emph{n}}\textless{}\&{\emph{m}} & File descriptor {\emph{n}} is made to be a copy of input file descriptor {\emph{m}} \tn 
% Row Count 6 (+ 3)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{x{1.36 cm} x{6.64 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{read builtin}}  \tn
% Row 0
\SetRowColor{LightBackground}
`-a` & Read values into an array \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
`-d{\emph{D}}` & Only read lines up to the character {\emph{D}} \tn 
% Row Count 3 (+ 2)
% Row 2
\SetRowColor{LightBackground}
`-n` {\emph{N}} & Only read the first {\emph{N}} characters of each line \tn 
% Row Count 5 (+ 2)
% Row 3
\SetRowColor{white}
`-p` & Prints the string before reading input \tn 
% Row Count 7 (+ 2)
% Row 4
\SetRowColor{LightBackground}
`-r` & Usually backslash indicates a line continuation. This option interprets escaped characters like `\textbackslash{}n` \tn 
% Row Count 11 (+ 4)
% Row 5
\SetRowColor{white}
`-s` & Do not echo the characters typed into the terminal \tn 
% Row Count 13 (+ 2)
% Row 6
\SetRowColor{LightBackground}
`-t` {\emph{T}} & Wait {\emph{T}} seconds for input, then finish \tn 
% Row Count 15 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{p{2 cm} x{6 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Signals}}  \tn
% Row 0
\SetRowColor{LightBackground}
INT & Ctrl-C \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
TSTP & Ctrl-Z \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
TERM & `kill` \tn 
% Row Count 3 (+ 1)
% Row 3
\SetRowColor{white}
QUIT & `kill -QUIT` \tn 
% Row Count 4 (+ 1)
% Row 4
\SetRowColor{LightBackground}
KILL & `kill -KILL` \tn 
% Row Count 5 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{x{2.48 cm} x{5.52 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Variables}}  \tn
% Row 0
\SetRowColor{LightBackground}
\$0, \$1, \$2, ... & Positional parameters \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
\$@ & "\$1" "\$2" "\$3" ... \tn 
% Row Count 3 (+ 1)
% Row 2
\SetRowColor{LightBackground}
\$* & A string of positional params \textgreater{} 0 \tn 
% Row Count 5 (+ 2)
% Row 3
\SetRowColor{white}
\$\# & Number of positional params - 1 \tn 
% Row Count 7 (+ 2)
% Row 4
\SetRowColor{LightBackground}
\$? & Exit status of last command run \tn 
% Row Count 9 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{x{2.56 cm} x{5.44 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Run a script}}  \tn
% Row 0
\SetRowColor{LightBackground}
`source {\emph{myscript}}` & Run in current shell \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
`./{\emph{myscript}}` & Run script in a subshell \tn 
% Row Count 4 (+ 2)
% Row 2
\SetRowColor{LightBackground}
`{\emph{myscript}}` & Run script in subshell. Must be in `\$PATH` \tn 
% Row Count 6 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{Functions}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{8.4cm}}{Two ways to define: \newline % Row Count 1 (+ 1)
`function {\emph{myfunction}} \{ ... \}` \newline % Row Count 2 (+ 1)
`{\emph{myfunction}} ( ) \{ ... \}` \newline % Row Count 3 (+ 1)
Call a function: \newline % Row Count 4 (+ 1)
`{\emph{myfunction}} arg1 arg2` \newline % Row Count 5 (+ 1)
Keywords: \newline % Row Count 6 (+ 1)
`local` - Limit variable scope. `\$@, \$*, \$\#, \$0, \$1` are automatically local.% Row Count 8 (+ 2)
} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{x{3.52 cm} x{4.48 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{String operators}}  \tn
% Row 0
\SetRowColor{LightBackground}
`\$\{{\emph{varname}}:-{\emph{word}}\}` & Returns {\emph{word}} \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
`\$\{{\emph{varname}}:={\emph{word}}\}` & Sets and returns {\emph{word}} \tn 
% Row Count 4 (+ 2)
% Row 2
\SetRowColor{LightBackground}
`\$\{{\emph{varname}}:?{\emph{message}}\}` & Prints {\emph{message}} and exits \tn 
% Row Count 6 (+ 2)
% Row 3
\SetRowColor{white}
`\$\{{\emph{varname}}:{\emph{offset}}:{\emph{length}}\}` & Returns substring (1-indexed) \tn 
% Row Count 8 (+ 2)
% Row 4
\SetRowColor{LightBackground}
`\$\{{\emph{varname}}:+{\emph{word}}\}` & If {\emph{varname}} is defined, then returns {\emph{word}}. Else returns null. \tn 
% Row Count 11 (+ 3)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{8.4cm}}{If {\emph{varname}} does not exist or is null, then string operators follow the behavior above (except for the `:+`).}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{x{3.76 cm} x{4.24 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Pattern-matching operators}}  \tn
% Row 0
\SetRowColor{LightBackground}
`\$\{{\emph{varname}}\#{\emph{pattern}}\}` & Match shortest from the start and delete \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
`\$\{{\emph{varname}}\#\#{\emph{pattern}}\}` & Match longest from the start and delete \tn 
% Row Count 4 (+ 2)
% Row 2
\SetRowColor{LightBackground}
`\$\{{\emph{varname}}\%{\emph{pattern}}\}` & Match shortest from the end and delete \tn 
% Row Count 6 (+ 2)
% Row 3
\SetRowColor{white}
`\$\{{\emph{varname}}\%\%{\emph{pattern}}\}` & Match longest from the end and delete \tn 
% Row Count 8 (+ 2)
% Row 4
\SetRowColor{LightBackground}
`\$\{{\emph{varname}}/{\emph{pattern}}/{\emph{replace}}\}` & Match longest and replace \tn 
% Row Count 10 (+ 2)
% Row 5
\SetRowColor{white}
`\$\{{\emph{varname}}//{\emph{pattern}}/{\emph{replace}}\}` & Match all and replace \tn 
% Row Count 12 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{x{4 cm} x{4 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{If / else conditions}}  \tn
% Row 0
\SetRowColor{LightBackground}
{\emph{statement1}} `\&\&` {\emph{statement2}} & If {\emph{statement1}} runs, then run {\emph{statement2}} \tn 
% Row Count 3 (+ 3)
% Row 1
\SetRowColor{white}
{\emph{statement1}} `||` {\emph{statement2}} & If {\emph{statement1}} fails, then run {\emph{statement2}} \tn 
% Row Count 6 (+ 3)
% Row 2
\SetRowColor{LightBackground}
{\emph{statement1}} `-a` {\emph{statement2}} & {\emph{statement1}} AND {\emph{statement2}} \tn 
% Row Count 8 (+ 2)
% Row 3
\SetRowColor{white}
{\emph{statement1}} `-o` {\emph{statement2}} & {\emph{statement1}} OR {\emph{statement2}} \tn 
% Row Count 10 (+ 2)
% Row 4
\SetRowColor{LightBackground}
`-lt`, `-le`, `-eq`, `-gt`, `-ge`, `-ne` & Integer comparisons \tn 
% Row Count 12 (+ 2)
% Row 5
\SetRowColor{white}
`=`, `!=`, `\textless{}`, `\textgreater{}` & String comparisons \tn 
% Row Count 13 (+ 1)
% Row 6
\SetRowColor{LightBackground}
`-n {\emph{str1}}` & {\emph{str1}} has length \textgreater{} 0 \tn 
% Row Count 15 (+ 2)
% Row 7
\SetRowColor{white}
`-z {\emph{str1}}` & {\emph{str1}} has length 0 \tn 
% Row Count 16 (+ 1)
% Row 8
\SetRowColor{LightBackground}
`-d {\emph{file}}` & {\emph{file}} exists and is a directory \tn 
% Row Count 18 (+ 2)
% Row 9
\SetRowColor{white}
`-e {\emph{file}}` & {\emph{file}} exists \tn 
% Row Count 19 (+ 1)
% Row 10
\SetRowColor{LightBackground}
`-f {\emph{file}}` & {\emph{file}} exists and is a regular file \tn 
% Row Count 21 (+ 2)
% Row 11
\SetRowColor{white}
`-r {\emph{file}}` & User has read permission on {\emph{file}} \tn 
% Row Count 23 (+ 2)
% Row 12
\SetRowColor{LightBackground}
`-s {\emph{file}}` & {\emph{file}} exists and is not empty \tn 
% Row Count 25 (+ 2)
% Row 13
\SetRowColor{white}
`-w {\emph{file}}` & User has write permission on {\emph{file}} \tn 
% Row Count 27 (+ 2)
% Row 14
\SetRowColor{LightBackground}
`-x {\emph{file}}` & User has execute permission on {\emph{file}}, or search permission if it's a directory \tn 
% Row Count 31 (+ 4)
\end{tabularx}
\par\addvspace{1.3em}

\vfill
\columnbreak
\begin{tabularx}{8.4cm}{x{4 cm} x{4 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{If / else conditions (cont)}}  \tn
% Row 15
\SetRowColor{LightBackground}
`-N {\emph{file}}` & {\emph{file}} was modified since it was last read \tn 
% Row Count 3 (+ 3)
% Row 16
\SetRowColor{white}
`-O {\emph{file}}` & User owns {\emph{file}} \tn 
% Row Count 4 (+ 1)
% Row 17
\SetRowColor{LightBackground}
`-G {\emph{file}}` & {\emph{file}}'s group ID matches one of the user's group IDs \tn 
% Row Count 7 (+ 3)
% Row 18
\SetRowColor{white}
{\emph{file1}} `-nt` {\emph{file2}} & {\emph{file1}} has a newer modification time than {\emph{file2}} \tn 
% Row Count 10 (+ 3)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{8.4cm}}{All of the above conditions must go in square brackets (`{[} {]}`) because if/else test against {\emph{exit codes}}. Parentheses indicting order of operations within square brackets must be escaped with a backslash.}  \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}{Other flow control}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{8.4cm}}{`for` - Defaults to looping through `\$@`. Set loop delimiter using `\$IFS`. \newline % Row Count 2 (+ 2)
`case` {\emph{expression}} `in` \newline % Row Count 3 (+ 1)
~~~~{\emph{pattern1}} `)` \newline % Row Count 4 (+ 1)
~~~~~~~~{\emph{statements}} `;;` \newline % Row Count 6 (+ 2)
~~~~{\emph{pattern2}} `|` {\emph{pattern3}} `)` \newline % Row Count 8 (+ 2)
~~~~~~~~{\emph{statements}} `;;` \newline % Row Count 10 (+ 2)
~~~~... \newline % Row Count 11 (+ 1)
~~~~`* )` \newline % Row Count 12 (+ 1)
~~~~~~~~{\emph{last statements}} `;;` \newline % Row Count 14 (+ 2)
`esac `  \newline % Row Count 15 (+ 1)
`while` {\emph{condition}} `; do` {\emph{statements}} `; done` \newline % Row Count 16 (+ 1)
`until` {\emph{condition}} `; do` {\emph{statements}} `; done` \newline % Row Count 17 (+ 1)
There is also a `select` condition that operates like `case` on user input.% Row Count 19 (+ 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}{Subshell inheritance}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{8.4cm}}{These are inherited by subshells: \newline % Row Count 1 (+ 1)
- the current directory \newline % Row Count 2 (+ 1)
- environment variables \newline % Row Count 3 (+ 1)
- standard input, output, error, and other open file descriptors \newline % Row Count 5 (+ 2)
- signals that are ignored% Row Count 6 (+ 1)
} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}


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

\end{document}