Issue calling a script

[DiP-ER]

I'm trying to call a script to control PSU control but the following line seems to cause issues. Of course, the correct API key and server address has been changed.

curl -s -H "Content-Type: application/json" -H "X-Api-Key: YOUR_API_KEY" -X POST -d '{ "command":"turnPSUOn" }' http://YOUR_OCTOPRINT_SERVER/api/plugin/psucontrol

I created a script to touch a file which works, but doesn't like the above line.

I've read running scripts have been hit or miss. Any one have any insight?