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\documentclass{article}
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\usepackage{../style}
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\usepackage{array}
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\begin{document}
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\newcolumntype{C}[1]{>{\centering}m{#1}}
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\section*{Coursework for 7CCSMSEN}
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This coursework is worth 10\% and is due on 1 December at 16:00. You
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are asked to fill in the access control matrix below giving the
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correct access rights. You have to submit your answers at KEATS. You
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can submit your answers in a txt-file or as pdf.
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\subsubsection*{Disclaimer}
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It should be understood that the work you submit represents your
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\textbf{own} effort! You are not supposed to work in groups and have
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not copied any solution from anyone else.\bigskip
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\subsection*{Task}
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A Unix directory might look as follows:
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\begin{center}
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\begin{verbatim}
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$ ls -ld . * */*
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drwxr-xr-x 1 ping staff 32768 Apr 2 2010 .
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-rw----r-- 1 ping students 31359 Jul 24 2011 manual.txt
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-r--rw--w- 1 bob students 4359 Jul 24 2011 report.txt
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-rwsr--r-x 1 bob students 141359 Jun 1 2013 microedit
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dr--r-xr-x 1 bob staff 32768 Jul 23 2011 src
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-rw-r--r-- 1 bob staff 81359 Feb 28 2012 src/code.c
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-r--rw---- 1 emma students 959 Jan 23 2012 src/code.h
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\end{verbatim}
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\end{center}
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\noindent
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with group memberships assigned as follows:
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\begin{center}
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\begin{tabular}{ll}
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Members of group staff: & \texttt{ping}, \texttt{bob}, \texttt{emma}\\
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Members of group students: & \texttt{emma}\\
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\end{tabular}
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\end{center}
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\noindent
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The file \texttt{microedit} is a text editor, which allows its users
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to open, edit and save files. Note carefully that microedit has set
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its \textbf{setuid bit}. Fill in the access control matrix below
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that shows for each of the above five files, whether \texttt{ping},
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\texttt{bob}, or \texttt{emma} are able to read (R) or replace (W) its
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contents using the editor microedit.\bigskip
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\begin{center}
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\def\arraystretch{1.5}
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\begin{tabular}{r|c|c|c|c|c}
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& manual.txt & report.txt & microedit & src/code.c & src/code.h \\\hline
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ping & & & & &\\\hline
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bob & & & & &\\\hline
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emma & & & & &\\
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\end{tabular}
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\end{center}\bigskip
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\noindent
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For help about how to fill in the access control matrix, see additional hints
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uploaded to KEATS.
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\end{document}
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%%% Local Variables:
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%%% mode: latex
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%%% TeX-master: t
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%%% End:
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