您可以使用system_profiler SPDisplaysDataType或defaults read /Library/Preferences/com.apple.windowserver.plist：

$ system_profiler SPDisplaysDataType
Graphics/Displays:

    NVIDIA GeForce GT 640M:

      Chipset Model: NVIDIA GeForce GT 640M
      Type: GPU
      Bus: PCIe
      PCIe Lane Width: x16
      VRAM (Total): 512 MB
      Vendor: NVIDIA (0x10de)
      Device ID: 0x0fd8
      Revision ID: 0x00a2
      ROM Revision: 3707
      Displays:
        iMac:
          Display Type: LCD
          Resolution: 1920 x 1080
          Pixel Depth: 32-Bit Color (ARGB8888)
          Main Display: Yes
          Mirror: Off
          Online: Yes
          Built-In: Yes
          Connection Type: DisplayPort
$ defaults read /Library/Preferences/com.apple.windowserver.plist
{
    DisplayResolutionEnabled = 1;
    DisplaySets =     (
                (
                        {
                Active = 1;
                Depth = 4;
                DisplayID = 69731456;
                DisplayProductID = 40978;
                DisplaySerialNumber = 0;
                DisplayVendorID = 1552;
                Height = 1080;
                IODisplayLocation = "IOService:/AppleACPIPlatformExpert/PCI0@0/AppleACPIPCI/P0P2@1/IOPCI2PCIBridge/GFX0@0/NVDA,Display-A@0/NVDA";
                IOFlags = 7;
                LimitsHeight = 1080;
                LimitsOriginX = 0;
                LimitsOriginY = 0;
                LimitsWidth = 1920;
                MirrorID = 0;
                Mirrored = 0;
                Mode =                 {
                    BitsPerPixel = 32;
                    BitsPerSample = 8;
                    DepthFormat = 4;
                    Height = 1080;
                    IODisplayModeID = "-2147479552";
                    IOFlags = 7;
                    Mode = 1;
                    PixelEncoding = "--------RRRRRRRRGGGGGGGGBBBBBBBB";
                    RefreshRate = 0;
                    SamplesPerPixel = 3;
                    UsableForDesktopGUI = 1;
                    Width = 1920;
                    kCGDisplayBytesPerRow = 7680;
                    kCGDisplayHorizontalResolution = 103;
                    kCGDisplayModeIsInterlaced = 0;
                    kCGDisplayModeIsSafeForHardware = 1;
                    kCGDisplayModeIsStretched = 0;
                    kCGDisplayModeIsTelevisionOutput = 0;
                    kCGDisplayModeIsUnavailable = 0;
                    kCGDisplayModeSuitableForUI = 1;
                    kCGDisplayPixelsHigh = 1080;
                    kCGDisplayPixelsWide = 1920;
                    kCGDisplayResolution = 1;
                    kCGDisplayVerticalResolution = 103;
                };
                OriginX = 0;
                OriginY = 0;
                PixelEncoding = "--------RRRRRRRRGGGGGGGGBBBBBBBB";
                Resolution = 1;
                Unit = 0;
                UnmirroredHeight = 1080;
                UnmirroredLimitsHeight = 1080;
                UnmirroredLimitsOriginX = 0;
                UnmirroredLimitsOriginY = 0;
                UnmirroredLimitsWidth = 1920;
                UnmirroredMode =                 {
                    BitsPerPixel = 32;
                    BitsPerSample = 8;
                    DepthFormat = 4;
                    Height = 1080;
                    IODisplayModeID = "-2147479552";
                    IOFlags = 7;
                    Mode = 1;
                    PixelEncoding = "--------RRRRRRRRGGGGGGGGBBBBBBBB";
                    RefreshRate = 0;
                    SamplesPerPixel = 3;
                    UsableForDesktopGUI = 1;
                    Width = 1920;
                    kCGDisplayBytesPerRow = 7680;
                    kCGDisplayHorizontalResolution = 103;
                    kCGDisplayModeIsInterlaced = 0;
                    kCGDisplayModeIsSafeForHardware = 1;
                    kCGDisplayModeIsStretched = 0;
                    kCGDisplayModeIsTelevisionOutput = 0;
                    kCGDisplayModeIsUnavailable = 0;
                    kCGDisplayModeSuitableForUI = 1;
                    kCGDisplayPixelsHigh = 1080;
                    kCGDisplayPixelsWide = 1920;
                    kCGDisplayResolution = 1;
                    kCGDisplayVerticalResolution = 103;
                };
                UnmirroredOriginX = 0;
                UnmirroredOriginY = 0;
                UnmirroredResolution = 1;
                UnmirroredWidth = 1920;
                Width = 1920;
            }
        )
    );
    ForceOldStyleMemoryManagement = 0;
}

您也可以使用一个名为cscreen的命令行工具：

# install homebrew if you don't have it already
/usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"

# install cscreen
brew install --cask cscreen

# list displays
cscreen -l

输出：

DisplayID  Index     Depth     Width     Height  Refresh
       1       1        32      1440        900    60
       2       2        32      1920       1080    60
use -h to display all usage options

注意：

• 第一次尝试打开cscreen时，操作系统将不允许，因为它没有签名。
• 你必须在System Preferences中访问Security & Privacy并允许它。

Homebrew package search

使用python获取带有数据的字典。

import Foundation, objc
import Quartz


iokit = {}

iokitBundle = objc.initFrameworkWrapper(
  "IOKit",
  frameworkIdentifier="com.apple.iokit",
  frameworkPath=objc.pathForFramework("/System/Library/Frameworks/IOKit.framework"),
  globals=globals()
)

IOKit = Foundation._functiondefines.NSBundle.bundleWithIdentifier_('com.apple.framework.IOKit')

functions = [('IOServiceGetMatchingService', b'II@'),
             ('IOServiceMatching', b'@*'),
             ("IODisplayGetFloatParameter", b'iII@o^f'),
             ("IODisplayGetIntegerRangeParameter", b'I'),
             ('IORegistryEntryCreateCFProperties', b'IIo^@@I'),
             ('IOPSCopyPowerSourcesByType', b'@I'),
             ('IODisplaySetFloatParameter', b'iII@f'),
             ("IOHIDGetActivityState", b'IBi'),
             ('IODisplayCopyFloatParameters', b'II^^{__CFDictionary}i'),
             ('IODisplaySetIntegerParameter', b'II^{__CFString=}ii'),
             ('IODisplayCreateInfoDictionary', b'^{__CFDictionary=}II'),
             ('IODisplaySetParameters', b'II^{__CFDictionary=}i')

             ]




objc._objc.loadBundleFunctions(iokitBundle, iokit, functions)
objc._objc.loadBundleFunctions(IOKit, globals(), functions)

for var in variables:
  key = "{}".format(var[0])
  if key in globals():
      iokit[key] = globals()[key]


var = iokit['IODisplayCreateInfoDictionary'](Quartz.CGDisplayIOServicePort(Quartz.CGMainDisplayID()), 0)
print(var, sep=r' ')