Why do I need to source bash_profile every time

Question

I have installed Hadoop and every time I want to run it, first I have to do this:

source ~/.bash_profile

or it won\'t recognize the command

Answer 1

On Mac Catalina, I just had to open "preferences" on terminal and change the "shells open with" from "default" to "Command(complete path)", which the default path was "/bin/zsh". touch ~/.zshrc, if that file doesn't exist already, and copy/paste your stuff from ".bash_profile" into the ".zshrc" file.