How to send GCODE commands from the cli?

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1

Not sure if 'Get Help' is the best category for this but 'General' seemed too general for it so here it goes...

How would I issue a single GCODE to my printer from a bash script?

I wrote a bash script to run after a new firmware build that checks some things, names and archives that particular build, scps it to printhost:/media/usb0, -
and there it is stuck. I would like it to issue some magic spell to have M997 go to the printer, then it waits a while and finally checks if the boot loader managed to rename the .bin to FIRMWARE.CUR or failed to do so (as it happens a lot recently, slowing the boot...)

I realize I could use mosquitto_pub to switch the power (controlled by a Tasmota) off and on again, that would force a reboot. So I'm not entirely helpless, it's more like:
can it be done?

2

Use the API with something like curl:

https://docs.octoprint.org/en/master/api/printer.html#send-an-arbitrary-command-to-the-printer

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3

ahh! I wasn't aware of that, will check this out.
Thank you so much for replying instantly

4

works like a charm once I got the syntax right.
I post it here in case someone gets here later from a search and is unsure about the syntax like I was.

curl -X POST -H "Content-Type: application/json" -H "X-Api-Key":"abcdef" -d '{"command":"M117 hello world"}' http://printhost.local/api/printer/command

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