> ## 2 Installation Verification

> This chapter is about verifying your installation by performing a few simple tests to see that your system is properly installed.

> ### 2.1 UNIX

> - Start Erlang/OTP from the command line,

>         unix> erl

>   Expect the following output:

>         Erlang (BEAM) emulator version 5.0.1 [threads]

>         Eshell V5.0.1  (abort with ^G)
>         1>

> - Start the GS-based toolbar from the Erlang shell,

>         1> toolbar:start().
>         2>

>   and check that the toolbar window pops up.
>   Note: The trailing full stop (`"."`) is an end marker for all commands in the Erlang shell, and must be entered for a command to begin execution.
> - Exit by entering the command `halt()`,

>         2> halt().

>   which should end both the toolbar window and the command line window.

> ### 2.2 Windows

> - Start Erlang/OTP by double-clicking on the Erlang shortcut icon on the desktop.
>   Expect a command line window to pop up with the following output,

>         Erlang (BEAM) emulator version 5.0.1 [threads]

>         Eshell V5.0.1  (abort with ^G)
>         1>

> - Start the GS-based toolbar from the Erlang shell,

>         1> toolbar:start().
>         2>

>   and check that the toolbar window pops up.
>   Note: The trailing full stop (`"."`) is an end marker for all commands in the Erlang shell, and must be entered for a command to begin execution.
> - Exit by entering the command `halt()`,

>         2> halt().

>   which should end both the toolbar window and the command line window.

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