\def\GWslide{\begin{frame} \frametitle{GNU Wget}
GNU Wget is a free software package for retrieving files using HTTP, HTTPS and FTP, 
the most widely-used Internet protocols. It is a non-interactive commandline tool, so it may 
easily be called from scripts, cron jobs, terminals without X-Windows support, etc. 
\begin{itemize}
\item Runs on most UNIX-like operating systems as well as Microsoft Windows.
\item Homepage: \url{http://www.gnu.org/software/wget/}
\item Basic usage: 
\begin{itemize}
\item To get $U_l$: wget \url{http://golem.fjfi.cvut.cz/utils/data/<\#ShotNo>/loop_voltage}
\item To get whole shot: wget -r  -nH  --cut-dirs=3 --no-parent -l2 -Pshot \url{http://golem.fjfi.cvut.cz/shots/<\#ShotNo>}
\end{itemize}
\end{itemize}
\end{frame}}