\documentclass[11pt]{article}

% Engine-specific settings

% pdftex:

\ifcsname pdfmatch\endcsname

\usepackage[T1]{fontenc}

\usepackage[utf8]{inputenc}

\fi

% xetex:

\ifcsname XeTeXinterchartoks\endcsname

\usepackage{fontspec}

\defaultfontfeatures{Ligatures=TeX}

\fi

% luatex:

\ifcsname directlua\endcsname

\usepackage{fontspec}

\fi

% End engine-specific settings

\usepackage{lmodern}

\usepackage{amssymb,amsmath}

\usepackage{graphicx}

\usepackage{fullpage}

\usepackage[keeptemps=all, makestderr, usefamily=bash]{pythontex}

\begin{document}

\section*{Bash}

Inline: \bash{echo "Hello from bash!"}

Code environment:

\begin{bashcode}

echo "More from bash."

\end{bashcode}

Block environment:

\begin{bashblock}

ls -a

\end{bashblock}

Printed output:

\printpythontex[verbatim]

Verbatim:

\begin{bashverbatim}

echo "More from bash."

\end{bashverbatim}

Sub environment:

\begin{bashsub}

Some text \textcolor{blue}{!{"followed by things from bash"}} and then more text.

\end{bashsub}

Again, with command: \bashs{Some text \textcolor{blue}{!{"followed by more things from bash"}} and then more text.}

\end{document}