[fpc-pascal] Can a console app running as Linux service restart itself?

[Bo Berglund]

On Thu, 20 May 2021 17:13:16 +0200 (CEST), Michael Van Canneyt via fpc-pascal
<fpc-pascal at lists.freepascal.org> wrote:

>
>
>On Thu, 20 May 2021, Bo Berglund via fpc-pascal wrote:
>
>> On Thu, 20 May 2021 14:52:47 +0200 (CEST), Michael Van Canneyt via fpc-pascal
>> <fpc-pascal at lists.freepascal.org> wrote:
>>
>>>
>>>
>>> On Thu, 20 May 2021, Bo Berglund via fpc-pascal wrote:
>>>
>>>> I would like my service application to restart itself once per 24 hours, but
>>>> only when nothing else is going on. So the application itself would know this
>>>> but how can I make it restart itself (as the service)?
>>>
>>> Just exit ? 
>>> If you configured systemd to start your app correctly it will restart it.
>>>
>>
>> Is it as simple as that? Here is my service file:
>>
>> [Unit]
>> Description=SSRemote Server
>> Wants=network.target
>> After=syslog.target network-online.target
>>
>> [Service]
>> Type=simple
>> ExecStart=/agi/ssremote/bin/SSRemoteServerLx
>> Restart=always  #<== This
>> RestartSec=10   #<== And this
>> KillMode=process
>> User=pi
>>
>> [Install]
>> WantedBy=multi-user.target
>>
>> Do these 2 marked lines mean that if the service application just exits (with no
>> exit code) systemd will restart it after 10 seconds?
>
>Yes.
>
>>
>> And:
>> Right now I am running it as user pi as shown above, is there some reason I
>> should run it as root instead?
>
>Running as root is not recommended. You can do it, but I would not.
>

Thanks Michael, much obliged!
Makes things so much simpler. Just exit at the appropriate time. :-)

-- 
Bo Berglund
Developer in Sweden