\documentclass[12pt,t]{beamer}

\setbeamersize{text margin left=0pt, text margin right=4cm}
\hypersetup{colorlinks=true,linkcolor=red}
\usetheme{boxes}

\usepackage[utf8]{inputenc}
\usepackage[russian,english]{babel}
\usepackage[T2A]{fontenc}
\usepackage{hyperref}
\usepackage[final]{listings}
\usepackage{breakurl}
\usepackage{cite}
\usepackage{perpage}

\graphicspath{{img/}}

\def\Url\Breaks{\do\/\do-}
\lstset{
  frame=none,
  breaklines=true,
  basicstyle=\lst@ifdisplaystyle\tiny\fi,
  postbreak=\raisebox{0ex}{\ensuremath{\hookrightarrow\space}},
  numbers=left,
  showlines=true
}

\MakePerPage{footnote}

\title{Операционные Системы}
\subtitle{Системные вызовы}
\date{\today}

\begin{document}

  \begin{frame}
    \titlepage
  \end{frame}
  \input{syscall}
\end{document}
