\frametitle{Navigation Examples}
\begin{columns}
\begin{column}{0.48\columnwidth}
\begin{block}{Our Filesystem Structure}
\begin{verbatim}
/ (root)
├── bin/
├── home/
│   └── user/
│       ├── docs/
│       └── photos/
└── usr/
\end{verbatim}
\end{block}
\end{column}
\begin{column}{0.48\columnwidth}
\begin{exampleblock}<2->{Using Navigation Commands}\label{sec:org4c12b05}
\begin{verbatim}
$ pwd
/home/user

$ ls -F          # -F adds / to directories
docs/  photos/

$ cd docs
$ pwd
/home/user/docs

$ cd ..
$ pwd
/home/user
\end{verbatim}
\end{exampleblock}
\end{column}
\end{columns}
