macOS
macOS
Who is listening on a given TCP port on Mac OS X?
sudo lsof -i -n -P | grep LISTEN
netstat -an -ptcp | grep LISTEN
sudo lsof -iTCP -sTCP:LISTEN -P -n
如果你想（强迫症般地）准确输入左引号和右引号，在 macOS 上可以使用这些快捷键：
左弯双引号 “：Option-[
右弯双引号 ”：Option-Shift-[
左弯单引号 ‘：Option-]
右弯单引号 ’：Option-Shift-]
左直角引号 「：中文输入法，Shift-[
右直角引号 」：中文输入法，Shift-]
自然码：
defaults write com.apple.inputmethod.CoreChineseEngineFramework shuangpinLayout 5
Repeat
defaults write -g ApplePressAndHoldEnabled -bool false
cloak
launchctl bootstrap gui/$(id -u) ~/Library/LaunchAgents/cloak.macos.plist
Flushing your DNS cache on Mac OS X
sudo killall -HUP mDNSResponder;sudo killall mDNSResponderHelper;sudo dscacheutil -flushcache
Show listen ports
lsof -nP -iTCP | grep LISTEN
Bluetooth Devices Not Connecting to OSX
Solution:
- Delete com.apple.Bluetooth.plist. This file is found at HD/Library/Preferences.
- Turn off Bluetooth on your Mac. This is done by clicking the Bluetooth icon in the menu bar and selecting ‘Turn Bluetooth Off’.
- Unplug input-based USB devices (e.g. any USB mice, keyboards, Wacom tablets, etc).
- Shut down computer. Do not restart, but do a full shut down.
- Turn off your Bluetooth devices.
- Boot computer.
- Turn Bluetooth on.
- Begin pairing devices. This involves clicking: Bluetooth icon in menu bar >> Set up Bluetooth Device >> Select Bluetooth device >> Follow on-screen instructions. In the case of your keyboard, I would suggest pressing the ‘Enter/Return’ button several times after entering the passphrase shown on your screen.
This should result in your devices being reconnected.