> Hello. I am trying to follow the instructions here. I am using a MacBook Pro. I am on step 5. Update Your environmental variable to include the path you just specified.... What do I do here? I am new to this. What is the environmental variable? https://medium.com/@samfeolu/install-your-npm-packages-globally-without-sudo-in-3-steps-d62c96a76b89 teacher@Teachers-MacBook-Pro-6 ~ % source ~/.profile > source: no such file or directory: /Users/teacher/.profile > teacher@Teachers-MacBook-Pro-6 ~ %