- 要Homebrew
brew install bash-completion
echo "[ -f /usr/local/etc/bash_completion ] && . /usr/local/etc/bash_completion" >> ~/.bash_profile
ln -s /Library/Developer/CommandLineTools/usr/share/git-core/git-completion.bash /usr/local/etc/bash_completion.d/git-completion.bash
exec $SHELL -l
これで各種コマンド入力時にTABキーを押下すると補完が効くようになります。