How to execute script on raspberry pi b using voice command?

Question

linux

Hello!
I have a raspberry pi b on raspbian and a logitech c270 webcam connected to it. The camera works fine, takes pictures and records video with sound.
The question is - is it possible (and how) to constantly listen to the environment using the microphone built into the camera and, when a certain voice command is received, call a bash script? In this case, you need to do without google voice api, because. raspberry will not have internet access. There will be only one team. Maybe there is some ready-made solution?
Buru welcomes any advice, thanks.

Answer 1

choose: en.wikipedia.org/wiki/Speech_recognition_in_Linux#Free_speech_recognition_engines

Answer 2

ok, pi, take a picture