MACOSHOME.COM
defaults write com.apple.AppleMultitouchTrackpad Clicking -bool true
sudo defaults write com.apple.driver.AppleBluetoothMultitouch.trackpad Clicking -bool true
sudo defaults -currentHost write NSGlobalDomain com.apple.mouse.tapBehavior -int 1
sudo defaults write NSGlobalDomain com.apple.mouse.tapBehavior -int 1
defaults write com.apple.AppleMultitouchTrackpad Clicking -bool false
sudo defaults write com.apple.driver.AppleBluetoothMultitouch.trackpad Clicking -bool false
sudo defaults -currentHost write NSGlobalDomain com.apple.mouse.tapBehavior -int 0
sudo defaults write NSGlobalDomain com.apple.mouse.tapBehavior -int 0
重启就看到效果了。