awiouy primaeval, think I have finally understood how-to set up timer service for webgrabplus.start
On my Rpi2 running LibreELEC, I have created service.webgrabplus.service and service.webgrabplus.timer files and transferred them to
\Storage\.config\system.d
service.webgrabplus.service
Code
[Unit]
Description=WebGrab+Plus
Documentation=http://www.webgrabplus.com/
After=network.target
Requires=network.target
[Service]
Type=simple
ExecStart=/bin/sh /storage/.kodi/addons/service.webgrabplus/bin/webgrabplus.start
service.webgrabplus.timer
Code
[Unit]
Description=Run WebGrab+Plus daily
[Timer]
OnCalendar=*-*-* 04:00:00
Persistent=true
Unit=service.webgrabplus.service
[Install]
WantedBy=timers.target
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Then I enabled and started timer with following commands via ssh
systemctl enable service.webgrabplus.timer
systemctl start service.webgrabplus.timer
I can check that the webgrabplus timer and service are actively running via ssh (following is short extract of pertinent info)
systemctl list-timers
Code
NEXT LEFT LAST PASSED
UNIT ACTIVATES
Mon 2016-10-10 04:00:00 BST 9h left n/a n/a
service.webgrabplus.timer service.webgrabplus.service
Now see if service runs successfully/correctly at 04:00 tomorrow morning