Hi Dave and Tim,

Thanks for all the help.  I'm running Raspbian Jessie Lite (no desktop or GUI) and Squeak
headless.  On boot I auto run Squeak.  Given that I didn't load CommandShell, which I think is
a GUI interface.  Squeak auto runs a Seaside program that only has one user so there is a
password but no user id.  There is a setting screen and a main screen that allows the user to
control up to 4 relays and view the status of up to 4 sensors/switches.

This first pass is going to a friend where we will install it to control his garage doors thru
the internet via a smart phone (or any browser).  I want to be able to reboot and shutdown from
the browser just because sometime you need to.

The reboot and shutdown code I used is below.  Just before calling those methods, I call a
method to logoff from the web session.

I'm not sure I need to but it seemed prudent to quit Squeak before shutting down.  I wait 10
seconds to give the logoff time to paint.  I wanted to have the shutdown delay for a few
seconds with the "-t sec" option but on Raspbian the sec option is taken as minutes (seems like
a bug to me).  Anyway the "now" option seems to give Squeak enough time to quit without a
problem.

Thanks again for the help.

Lou

reboot
	"Reboot the computer."

	[
		(Delay forSeconds: 10) wait.
		UnixProcess thisOSProcess command: 'sudo shutdown -r now'.
		Smalltalk snapshot: false andQuit: true.
	] fork.

shutdown
	"Shutdown the computer."

	[
		(Delay forSeconds: 10) wait.
		UnixProcess thisOSProcess command: 'sudo shutdown -P now'.
		Smalltalk snapshot: false andQuit: true.
	] fork.

On Wed, 8 Mar 2017 20:17:06 -0500, "David T. Lewis" <lewis at mail.msen.com> wrote:

>On Wed, Mar 08, 2017 at 07:33:18PM -0500, David T. Lewis wrote:
>> On Wed, Mar 08, 2017 at 04:23:45PM -0800, tim Rowledge wrote:
>> > 
>> > > On 08-03-2017, at 4:07 PM, David T. Lewis <lewis at mail.msen.com> wrote:
>> > > 
>> > > 
>> > > Having said that, I suspect that the reboot is going to be tricky.
>> > > The sudo command is designed for security, and it is smart enough not
>> > > to let the password input come from some arbitrary input stream such as
>> > > the one connected to your Squeak image. I'll try tinkering around with
>> > > it a bit, but I'm afraid this may not be not as simple as you might expect.
>> > Actually on a Pi ???sudo??? is normally password-free, wjich is probably enough to make some people???s heads explode, but there y???are.
>> >
>> 
>> Yes, on raspbian it will probably work. The tricky bit is that if you do
>> need to enter a password, sudo will read the password from the controlling
>> terminal the Squeak VM process, represented by /dev/tty. That more or less
>> equates to your keyboard. There is no easy way for Squeak to insert a keyboard
>> wedge to supply the password keystrokes, which of course is exactly what
>> was intended from a security point of view.
>>
>
>Actually, that reminds me - and I want to mention it now before I forget about
>it yet again - I think that the sudo password input issue might be effectively
>handled with the unix pseudo terminal interface (man 7 pty). Ian Piumarta made
>a plugin for this along with his really quite amazingly good telnet terminal
>emulator.
>
>That stuff, along with other things such as the VNC server, is still available here:
>
>  http://squeakvm.org/unix/goodies.html
>
>I also recall Ian asking me a long time ago why I didn't add pty support to
>the OSProcess plugin, which was a very good question, and I probably should have
>paid attention to it.
>
>Dave
> 
>
-- 
Louis LaBrunda
Keystone Software Corp.
SkypeMe callto://PhotonDemon