\usepackage[latin1]{inputenc}
\usepackage[bookmarks=true]{hyperref}
\usepackage{makeidx}
-\usepackage{booktabs}
+%\usepackage{booktabs}
\usepackage{pstcol}
\usepackage{pst-node}
\usepackage{graphicx}
\include{fileunix}
\include{filestd}
\include{system}
-\include{session}
\include{signal}
-\include{fileadv}
\include{ipc}
+\include{fileadv}
+\include{session}
\include{network}
\include{socket}
\include{elemtcp}
\include{ipprot}
\include{tcpprot}
\include{errors}
+\include{ringraziamenti}
\include{fdl}
% at the end put the bibliography