Can someone please help explain why this script won't run in Domoticz?

[Egregius]

Yes, so it's not a Domoticz problem.
Add the full path to the executable, something like /usr/bin/sky-remote-cli
Make sure the user that runs domoticz has rights to that executable.

[leecollings]

You mean add the full path in the script file, or the log file?

[Egregius]

In the script file

[sjoerd1953]

I suppose you have made the script executable (chmod 755 scriptname) but did you add the directory where it is located to your $PATH? First check this in a terminal with: echo $PATH When your directory is not listed execute this command in the terminal: sudo export PATH=$PATH:directory name (use full directory name: e.g. /home/pi/domoticz/scripts/bash)

If this solves the problem you only have the add the above command to your .profile file and reboot. By doing this you make the command persistent on reboot, otherwise you would have to execute it manually after every reboot.