Hi, honestly it depends on how much time / effort you want to spend on it plus the environment you're running on. Looks like Linux? If it is simply once a month is it worth automating?
I think you could cobble something together with a shell script for this...
Read and format the current date. Compare to requested date. If they match then run the script. scrot accepts command line params to delay X seconds first. You should also think about detecting a failure with the script so it can be executed manually. Maybe mail the snapshot to yourself as well?
Command-line mail is possible as well - including the snapshot as an attachment.
Doing this in Node-RED is also possible. We use it to automate complex web pages all the time. There is more needed (look at WDIO nodes) including Java / Selenium on a machine but can allow for much more sophisticated automation.
Cheers,
Paul
