// When you downloaded flutter sdk, unzip it to ~/flutter
// Add to ~/.bash_profile
nano .bash_profile
export PATH="$PATH:/Users/lol/development/flutter/bin"
// save
soure ~/.bash_profile
// ZSH
// Add the path to your ~/.zshrc
# Export flutter
export PATH=$HOME/flutter/bin:$PATH
// Make it happend and restart iterm or terminal
source ~/.zshrc
Reference: Github