The default interactive shell is now zsh.

export BASH_SILENCE_DEPRECATION_WARNING=1

• https://support.apple.com/en-us/HT208050

.zprofile
.profile

zsh, ~/.zshrc, .zsh_history, .zprofile, zshbuiltins, setenv, setopt, bindkey -e, zshcompsys, compdef, autoload, oh-my-zsh, prezto, fc, compinit, autoload, oh-my-zsh