% arara: pdflatex: { shell: true }
documentclass{article}
usepackage{tikz}
usetikzlibrary{external}
tikzsetexternalprefix{ffigurau/}
tikzexternalize
begin{document}
  tikz{node {ABC};}
  tikz{node {XYZ};}
end{document}

documentclass{article}
usepackage[a6paper ]{geometry}
usepackage{bashful}
pagestyle{empty}
begin{document}
The directories in my texttt{/usr} directory are:
bash[stdout]
printf %b "Initial listing of files in directory:n"
ls -F ./ffigurau
rm ,/ffigurau/*
printf %b "Current listing of files in directory:n"
ls -F ./ffigurau
END
That's it!
end{document}

drwxr-xr-x  2 username username 4.0K Med   1 02:17 ./
drwx------ 96 username username  12K Med   1 02:15 ../
-r--r--r--  1 username username   13 Med   1 02:17 company-accounts-final.ods
-r--r--r--  1 username username    0 Med   1 02:15 critical-report.tex
-r--r--r--  1 username username    5 Med   1 02:16 my-dissertation.tex

rm ../My Documents/my-dissertation.tex
rm: remove write-protected regular file ‘../My Documents/my-dissertation.tex’? n

% arara: pdflatex: { shell: true }
documentclass{article}
usepackage[a6paper ]{geometry}
usepackage{bashful}
pagestyle{empty}
begin{document}
The directories in my texttt{/usr} directory are:
bash[stdout,stderr]
printf %b "Initial listing of files in directory:n"
ls -F ../My Documents
rm -rf ,,/My Documents
printf %b "Current listing of files in directory:n"
ls -F ../My Documents
END
That's it!
end{document}