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macOS 常见问题

# 系统版本号
# 14.3.1
sw_vers -productVersion

system_profiler SPSoftwareDataType
cat /System/Library/CoreServices/SystemVersion.plist

path_helper​

  • /etc/paths
  • /etc/paths.d/
  • /etc/manpaths
  • /etc/manpaths.d
cat /etc/paths.d/* /etc/paths

/usr/libexec/path_helper

APFS vs HFS+​

  • APFS - 新的
  • HFS+ - 旧的

Inside​

Memory​

  • Memory - 虚拟内存 - 代码+数据+动态库+堆栈 等
  • Real Memory - 实际内存
  • Real Private Memory - 堆栈+字体缓存+OpenGL 等 - 独立占用
  • VM Compressed - 压缩不常用虚拟内存
    • 可关闭 sudo nvram boot-args="vm_compressor=1"
  • Real Shared Memory - 共享内存

AXIS AX88179 网卡用不了​

到官网下载最新驱动 https://asix.com.tw/en/product/USBEthernet/Super-SpeedUSBEthernet/AX88179

staff & wheel​

  • staff - 一般用户
  • wheel - 更高权限用户
    • root 在该分组
    • 可以 su
  • everyone
  • localaccounts
  • admin
  • 其他 _appserverusr _appserveradm _lpadmin com.apple.sharepoint.group.1 _appstore _lpoperator _developer _analyticsusers com.apple.access_ftp com.apple.access_screensharing com.apple.access_ssh com.apple.access_remote_ae
  • staff 和 wheel 起源于 BSD

未进入休眠​

  • 在 Console.app 中搜索 PreventUserIdleSystemSleep
  • pmset -g 确认当前的配置信息
    • 时间
    • sleep 是否有 prevent 信息
      • 常见阻碍线程
        • sharingd
        • backupd
        • AddressBookSourceSync
# 当前系统状态
# 主要是 PreventUserIdleSystemSleep
pmset -g assertions

# 查看状态变更日志
# InternalPreventSleep 和 PreventUserIdleSystemSleep
pmset -g assertionslog

# 查看唤起原因
log show --style syslog --start "$(date +%Y-%m-%d) 00:00:00" | grep "Wake reason"
  • PreventUserIdleSystemSleep
    • BTLEAdvertisement
  • MaintenanceWake - mDNSResponder:maintenance

Shutdown the computer, wait 30 seconds, restart the computer.

Disconnect all third-party peripherals.
Resetting your Mac’s PRAM and NVRAM
Reset the System Management Controller (SMC)
Reset your Startup Disk and Sound preferences.
Start the computer in Safe Mode. Test in safe mode to see if the problem persists, then restart normally.
Use Apple Hardware Test to see if there is any hardware malfunction.

Repair the disk by booting from the Recovery HD. Immediately after the chime hold down the Command and R keys until the Utility Menu appears. Choose Disk Utility and click on the Continue button. Select the indented (usually, Macintosh HD) volume entry from the side list. Click on the First Aid button in the toolbar. Wait for the Done button to appear. Quit Disk Utility and return to the Utility Menu. Restart the computer from the Apple Menu.

Repair permissions on the Home folder: Resolve issues caused by changing the permissions of items in your home folder.

reset NVRAM
https://support.apple.com/en-us/HT204063

Option, Command, P, and R. You can release the keys after about 20 seconds, during which your Mac might appear to restart.

On Mac computers that play a startup sound, you can release the keys after the second startup sound.
On Mac computers that have the Apple T2 Security Chip, you can release the keys after the Apple logo appears and disappears for the second time.

https://support.apple.com/zh-cn/HT201295

有 T2 芯片的 Mac 笔记本电脑
先尝试以下操作：

选取苹果菜单 >“关机”。
在 Mac 关机后，按住电源按钮 10 秒钟。
松开电源按钮，然后等待几秒钟。
再次按下电源按钮以开启 Mac。
如果上述操作无法解决问题，请按照以下步骤操作：

选取苹果菜单 >“关机”。
在 Mac 关机后，按住右 Shift 键、左 Option 键和左 Control 键 7 秒钟。然后，在按住电源按钮的同时继续按住这些按键 7 秒钟。
松开所有三个按键和电源按钮，然后等待几秒钟。
再次按下电源按钮以开启 Mac。

tuntap​

窗口只能看到边缘没有 Title 如何拖动？​

  • 鼠标放到边缘，变成箭头
  • 按住 Cmd 即可拖动

cannot be opened because the developer cannot be verified​

下载的文件无法执行

# xattr -r -d com.apple.quarantine <文件>
# 例如
xattr -r -d com.apple.quarantine $HOME/Development/graalvm/

刷新 Finder​

  • 例如挂载 smb 的时候远程目录发生变化
osascript -e 'tell application "Finder" to tell front window to update every item'

macOS vs Darwin​

载入更新失败​

进入恢复模式关闭 sip - System Integrity Protection

csrutil disable

重启, 进入恢复, 安装完成后重新启用

csrutil enable

制作安装盘​

当下载好安装器后可直接使用安装器里附带的程序制作安装包

# 替换 MyVolume 为实际的挂载盘
# Big Sur
sudo /Applications/Install\ macOS\ Big\ Sur.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume
# Catalina
sudo /Applications/Install\ macOS\ Catalina.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume
# Mojave
sudo /Applications/Install\ macOS\ Mojave.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume
# High Sierra
sudo /Applications/Install\ macOS\ High\ Sierra.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume
# Sierra
sudo /Applications/Install\ macOS\ Sierra.app/Contents/Resources/createinstallmedia --applicationpath /Applications/Install\ macOS\ Sierra.app --volume /Volumes/MyVolume
# El Capitan
sudo /Applications/Install\ OS\ X\ El\ Capitan.app/Contents/Resources/createinstallmedia --applicationpath /Applications/Install\ OS\ X\ El\ Capitan.app --volume /Volumes/MyVolume
# Yosemite
sudo /Applications/Install\ OS\ X\ Yosemite.app/Contents/Resources/createinstallmedia --applicationpath /Applications/Install\ OS\ X\ Yosemite.app --volume /Volumes/MyVolume
# Mavericks
sudo /Applications/Install\ OS\ X\ Mavericks.app/Contents/Resources/createinstallmedia --applicationpath /Applications/Install\ OS\ X\ Mavericks.app --volume /Volumes/MyVolume

Installer can't verified 安装器不能被验证​

使用旧的安装应用, 2016.2.14 之前,可能会由于证书过期导致无法使用,通过修改系统时间来规避

# 在安装前进入终端执行
date 0101010116

重置混合磁盘/Fusion Drive​

diskutil resetFusion

SIP 影响​

网络存储设备不写 DS_Store 文件​

defaults write com.apple.desktopservices DSDontWriteNetworkStores true

interface 添加地址​

sudo ifconfig en0 alias 128.133.123.83/24 up
# 移除
sudo ifconfig en0 -alias 128.133.123.83/24 up

QuickLookSatellite​

用于生成 QuickLook，例如 媒体文件预览图。

异常高 CPU 占用，不停重启。

可能是因为 Finder 打开的某个目录，目录下媒体文件有异常。

例如 我 Finder 一个目录下的 AVI 文件异常，导致不停出现 QuickLookSatellite，且 CPU 非常高，关闭 Finder 即可。

syncpolicyd​

  • introduced in macOS 10.7.3 with the Gatekeeper feature.
  • act as the centralized daemon for answering Gatekeeper questions.
  • In addition to assessing applications before running, the daemon also handles authorizing the loading of KEXTs as well as tracking legacy applications that the user has run. In Mojave syspolicyd has expanded again and is responsible for handling software notarization checks as well. We’ll start with a very high level look at the daemon startup process and then dive deeper into each of syspolicyd’s subsystems.

rtcreportingd​

  • connect to pancake.apple.com
  • phone home to verify that your device is authorised for home sharing

qlgenerator - QuickLook Generator​

  • macOS Catalina+ /Library/QuickLook/
  • ~/Library/QuickLook/

Install qlgenerator​

sudo mv ~/Downloads/AVIFQuickLook.qlgenerator /Library/QuickLook/
xattr -d -r com.apple.quarantine /Library/QuickLook/AVIFQuickLook.qlgenerator
qlmanage -r

qlmanage -p input.avif    # preview
qlmanage -t input.avif -x # generate thumnail

# if using ~/Library/QuickLook/
mkdir -p ~/Library/QuickLook/
xattr -d -r com.apple.quarantine ~/Library/QuickLook/AVIFQuickLook.qlgenerator

sysmond​

  • macOS 的 Activity Monitor/活动监控 进程
  • 如果选择 Memory tab 且显示了 shared memory 和 private memory 会导致高 CPU 占用

Why ZSH​

  • Bash 4 为 GPLv3
  • 苹果拒绝使用 GPLv3
  • 10 年后迁移为使用 ZSH - MIT

installd​

  • PackageKit framework
  • Software Update
  • /System/Library/PrivateFrameworks/PackageKit.framework/Resources/installd
  • CPU 高是因为 compile the current list of software installed on your computer, and compare with the current version list received from Apple's servers
  • 参考

Mach-O universal binary​

  • 自 Big Sur 开始
    • 可以作为 x86 或 arm 启动
  • x86_64
  • arm64e

com.apple.MobileSoftwareUpdate.UpdateBrainService​

otool​

  • macOS 下的 ldd 对等工具
otool -L a.out

coreaudiod​

修复高 CPU 占用问题

mkdir ~/Library/Preferences/Audio
sudo chown _coreaudiod:admin ~/Library/Preferences/Audio

stat ~/Library/Preferences/Audio

bindfs​

  • fuse
brew install gromgit/fuse/bindfs-mac

bindfs a b

输入法卡顿​

kill -9 $(pgrep SCIM)

Powerup Hours​

brew install smartmontools
smartctl -a disk0 # Power On Hours
ac                # connect time accounting /var/run/utmpx

invalid active developer path​

sudo xcode-select --reset

com.apple.MobileSoftwareUpdate.UpdateBrainService​

系统更新

VNC Server​

  • 远程屏幕共享
/System/Library/CoreServices/RemoteManagement/ARDAgent.app/Contents/Resources/kickstart -configure -allowAccessFor -allUsers -privs -all

# 1. by kickstart
/System/Library/CoreServices/RemoteManagement/ARDAgent.app/Contents/Resources/kickstart -activate -configure -access -off -restart -agent -privs -all -allowAccessFor -allUsers

# 2. by launchctl
defaults write /var/db/launchd.db/com.apple.launchd/overrides.plist com.apple.screensharing -dict Disabled -bool false
launchctl load -w /System/Library/LaunchDaemons/com.apple.screensharing.plist

# 3. 指定用户
/System/Library/CoreServices/RemoteManagement/ARDAgent.app/Contents/Resources/kickstart -configure -allowAccessFor -specifiedUsers
/System/Library/CoreServices/RemoteManagement/ARDAgent.app/Contents/Resources/kickstart -activate -configure -users $USER -access -on -agent -privs -all -restart -agent

sudo /System/Library/CoreServices/RemoteManagement/ARDAgent.app/Contents/Resources/kickstart -deactivate

open vnc://192.168.1.1
Screen Sharing is not permitted on “10.10.1.1”. Disable and re-enable Screen Sharing or Remote Management in System Settings before trying again

cryptex​

  • cryptographically-sealed archive
  • /Volumes/Preboot/Cryptexes

dmg​

7z x googlechrome.dmg -o/tmp/googlechrome
VER=$(cat /tmp/googlechrome/Google\ Chrome/Google\ Chrome.app/Contents/Info.plist | grep -A1 CFBundleShortVersionString | tail -1 | sed -r 's/.*>(.*?)<.*/\1/' | tr -d '[[:space:]]')