Exec node 2 commands after each other

Hi
I ve got a question when I run exec commands it works perfectly but i want it to do 2 commands after each other is it posssible?

eg:

  1. cd to a given directoy
  2. start a sometgin in that directory eg.: a python script

for example in Linux you could use cd /mydir && run_my_app
or you could create a simple script/batch file and then call that.

Thank you