[Simh] Unattended background SIMH process

[Jeremy Begg]

Hello Jim,

> 	Hello Jeremy ,  You call a /home/eric/stop_eric.sh in your systemd
>procedure ,  But forgot to insert the contents of the file in your missive .

That's because I never wrote the 'stop_eric.sh' script.  Apologies for not
saying so in my posting!  The other postings in this discussion have given
me some ideas I might persue but for the time being it's not a critical item
for me.

Regards,

	Jeremy Begg

>On Fri, 29 Nov 2019, Jeremy Begg wrote:
>> Hi Seth,
>>
>>> Has anyone got a clean solution for running a background SIMH process
>>> that doesn't involve `screen` or `tmux`?
>>
>> My solution is pretty clean and doesn't require any kind of virtual TTY.
>>
>> I have SIMH running under Ubuntu Linux 18.04 on an Intel i3 NUC box.
>> It took a little trial and error to get it all working (mostly due to
>> Ubuntu's use of 'netplan' and 'systemd') but it works well enough for me.
>>
>> It's configured so that my SIMH VAX starts up when Linux starts up.
>> I don't have it configured to shutdown VAX/VMS or SIMH when Linux is
>> shutting down, but for my purposes it doesn't need to.  (Or I just haven't
>> gotten around to it yet; the machine is only rebooted when I want it to.)
>>
>> ------------------------------------------------------------------------------
>> # /etc/systemd/system/simh-eric.service
>> # Starts SIMH at system boot to run ERIC the Half-a-VAX
>> # Created 21-Jul-2019 by Jeremy Begg
>>
>> [Unit]
>> Description=ERIC the half-a-VAX
>> Requires=network-online.target
>> After=network-online.target
>>
>> [Service]
>> User=eric
>> ExecStart=/home/eric/start_eric.sh
>> ExecStop=/home/eric/stop_eric.sh
>> RemainAfterExit=yes
>>
>> [Install]
>> WantedBy=multi-user.target

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