Hi,
I just wanted to share a tip, as I was optimizing power usage on my Linux laptop and I’ve decided to pause syncthing on battery.
To do so I’ve created /etc/udev/rules.d/61-powersave.rules with the following content (append if already exists):
SUBSYSTEM=="power_supply", ATTR{online}=="0", RUN+="/usr/bin/killall -STOP syncthing"
SUBSYSTEM=="power_supply", ATTR{online}=="1", RUN+="/usr/bin/killall -CONT syncthing"
Reload udev with:
udevadm control --reload-rules
Works fine on Fedora 22, but should work on any system with udev.