Access actions.py in RASA-X

Hello All, I am new to rasa and rasa-x . Currently i can access only rasa-x, my query is how i can use actions.py in the rasa-x ?

you need to have two terminals open in the first one run the command

rasa run actions

and in the second one you run

rasa x

and in linux you can run all in one line

rasa run actions & rasa x