SSH check improvement

This is a proposal for the improvement of SSH check monitoring.
In the server monitoring with ssh check, it is easy to parse and cut the result of commands. But the network device monitoring with ssh check, because network device does not support the command for the type of text manipulation like "awk/sed, etc.", it is difficult to parse and get the value from the result of command. So, I want to request to add the parse and cut the result function using regex or some filtering function.