preamble.sty

\ProvidesPackage{preamble}
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc,url}
%\usepackage{babel,textcomp}
\usepackage{graphicx}
\usepackage{pdfpages}
\usepackage{fancyhdr}
\usepackage{afterpage}
\usepackage{amsmath}
\usepackage{amssymb}
\usepackage{caption}
\usepackage{mathtools}
\usepackage{listings}
\usepackage{color}
\usepackage[margin=1.2in]{geometry}

%\usepackage[hidelinks]{hyperref} % make links black
\usepackage{hyperref}
%\hypersetup{
  %colorlinks=false,
  %colorlinks=true,
  % citecolor=black,
  % filecolor=black,
  % linkcolor=red,
  % urlcolor=blue,
  % linktoc=all,
  % linktocpage,
%}

\pagestyle{fancy}
\fancyhead{}
\fancyfoot{}
\renewcommand{\headrulewidth}{0.0pt}
\renewcommand{\footrulewidth}{0.0pt}
\fancyhead[R]{\thepage}
\fancyhead[L]{\emph{}}

\renewcommand{\vec}[1]{\mathbf{#1}}    % vektorer i bf fremfor pil
\let\oldhat\hat
\renewcommand{\hat}[1]{\oldhat{\mathbf{#1}}} % enhetsvektorer i bf med hatt

\definecolor{keywords}{RGB}{50,50,250}
\definecolor{comments}{RGB}{190,70,20} % Orange
\definecolor{red}{RGB}{160,0,0}
\definecolor{green}{RGB}{0,150,0}
\definecolor{grey}{RGB}{225,225,225}

\lstdefinestyle{terminal}
{
  frame=single, 
  basicstyle=\ttfamily,%\small, 
}

\lstdefinestyle{fortran}
{
  frame=shadowbox, 
  rulesepcolor=\color{black},
  language=Fortran, 
  basicstyle=\ttfamily,%\small, 
  keywordstyle=\bf\color{keywords},
  morekeywords={as,range,len,float},
  commentstyle=\color{comments},
  stringstyle=\color{red},
  showstringspaces={false}
}

\lstdefinestyle{python}
{
  %frame=shadowbox, 
  rulesepcolor=\color{black},
  language=Python, 
  basicstyle=\ttfamily,%\small, 
  keywordstyle=\bf\color{keywords},
  morekeywords={as,range,len,float},
  commentstyle=\color{comments},
  stringstyle=\color{red},
  showstringspaces={false}
}
  % numbers=left,                     # Numbered lines
  % numbersep=5pt,                    # Dist from num to code
  % numberstyle=\small,%\color{mygray},
  % identifierstyle=\color{green}%,
  % backgroundcolor=\color{},
  % emph={MyClass,__init__},          % Custom highlighting
  % emphstyle=\ttb\color{deepred}}    % Custom highlighting style

% Custom commands
\newcommand{\pder}[2]{\frac{\partial #1}{\partial #2}}
\newcommand{\ppder}[2]{\frac{\partial^2 #1}{\partial^2 #2^2}}
\newcommand{\half}{\frac{1}{2}}
\newcommand{\intO}{\int_{\Omega}}
\newcommand{\intdO}{\int_{\partial\Omega}}
\newcommand{\intu}{\int^1_{-1}}
\newcommand{\ti}[1]{\tilde{#1}}
\newcommand{\md}{\;\mathrm{d}}