3 Installation Verification

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

If any of the tests listed below fails, consult the chapter on Corrective Maintenance.

3.1 Installation verification on UNIX

• Start Erlang from the command line,
  

    unix> erl
    

  Expect the following output,
  

    Erlang (JAM) emulator version 4.5
  
    Eshell V4.5  (abort with ^G)
    1>
    

  Exit by entering the command halt(),
  

    1> halt().
    unix> 
    

  Note: The trailing full stop (".") is an end marker for all commands in the Erlang shell, including the command halt(), and must be entered for a command to begin execution.
  
• Start the Integrated Development Environment from the command line,
  

    erl -x
    

  and check that the main window of the pxw-based Integrated Development Environment pops up. Exit the Integrated Development Environment by clicking the File/Quit menu.
  
• Start the gs-based toolbar from the Erlang shell (do not forget to end the command with a full stop as shown),
  
  

    unix> erl
    Erlang (JAM) emulator version 4.5
  
    Eshell V4.5  (abort with ^G)
    1> toolbar:start().
    

  and check that the toolbar window pops up. Exit by clicking the File/Quit menu. Exit Erlang by entering the halt() command at the Erlang shell prompt as above.
  

3.2 Installation verification on Windows NT

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

    Erlang (JAM) emulator version 4.5
  
    Eshell V4.5  (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(),
  

    1> halt().
    

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