Monitors OctoPrint terminal for your defined regular expressions. When it detects a match, it will send your commands. Code is based off OctoPrint-ActionCommandsPlugin by benlye.
Install via the bundled Plugin Manager or manually using this URL:
https://github.com/xia0/OctoPrint-TerminalResponse/archive/master.zip
Enter your regular expression on the left. Place values you would like to extract in parentheses. Enter your commands on the right with a new line for each command. Enter (1), (2), etc... to substitute your values.