\documentclass{UINthesis}
% \usepackage{showframe}
\usepackage{lipsum}

% repeated stuff
\newcommand{\judul}{JUDUL SKRIPSI}
\newcommand{\penulis}{PENULIS}
\newcommand{\nim}{00000000000}
\newcommand{\fakultas}{Sains dan Teknologi}
\newcommand{\jurusan}{Fisika}

\begin{document}

\frontmatter%
\thispagestyle{empty}
\titlepage%

\pagestyle{plain}
\originalitypage%
\validationpage%
\prefacepage%
\abstractpageid%
\abstractpageen%
\contentspage%
\figurespage%
\tablespage%
\listingpage%

\mainmatter%
\pagestyle{fancy}
\input{part/mainmatter/ch01.tex}
% \input{part/mainmatter/ch02.tex}
% \input{part/mainmatter/ch03.tex}
% \input{part/mainmatter/ch04.tex}
% \input{part/mainmatter/ch05.tex}
% \input{part/mainmatter/ch06.tex}

\backmatter%
\pagestyle{plain}
\bibliographypage%

\end{document}