\frametitle{Command History}
\begin{block}{History Features}
\begin{center}
\begin{tabular}{ll}
Key/Command & Action\\
\hline
Up/Down arrows & Navigate history\\
\texttt{history} & Show command history\\
\texttt{!!} & Repeat last command\\
\texttt{!grep} & Execute last command starting with grep\\
Ctrl+R & Reverse search history (The MVP!)\\
\end{tabular}
\end{center}
\end{block}
