Question

如果我使用PlistBuddy修改root拥有的plist，则命令以退出代码0完成。但是，plist不会被修改。当我用sudo重新运行命令时，plist会按预期进行修改。

这是PlistBuddy中的错误吗？它在Appium configuration script中给我带来了一些麻烦。

我正在使用此命令：

/usr/libexec/PlistBuddy -c "Add :TestTestTest dict" "$SOME_PLIST_PATH" || echo "failed"

这是一个完整的会话：

tba $ echo "$SOME_PLIST_PATH"
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator.sdk/Developer/Library/LaunchDaemons/com.apple.instruments.deviceservice.plist
tba $ ll "$SOME_PLIST_PATH"
-rw-r--r--  1 root  wheel   1.1K Jan  1 15:51 /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator.sdk/Developer/Library/LaunchDaemons/com.apple.instruments.deviceservice.plist
tba $ plutil -p "$SOME_PLIST_PATH"
{
  "Program" => "/Developer/Library/PrivateFrameworks/DVTInstrumentsFoundation.framework/DTServiceHub"
  "EnvironmentVariables" => {
    "LIB_PATH" => "/usr/local/lib/node_modules/appium//node_modules/appium-instruments/thirdparty/iwd7/"
    "DYLD_INSERT_LIBRARIES" => "/usr/local/lib/node_modules/appium//node_modules/appium-instruments/thirdparty/iwd7/DTMobileISShim.dylib"
  }
  "JetsamProperties" => {
    "JetsamMemoryLimit" => 0
  }
  "POSIXSpawnType" => "Adaptive"
  "MachServices" => {
    "com.apple.instruments.deviceservice.xpc" => 1
    "com.apple.instruments.deviceservice.lockdown" => 1
  }
  "EnableTransactions" => 1
  "Label" => "com.apple.instruments.deviceservice"
}
tba $ /usr/libexec/PlistBuddy -c "Add :TestTestTest dict" "$SOME_PLIST_PATH" || echo "failed"
tba $ plutil -p "$SOME_PLIST_PATH"
{
  "Program" => "/Developer/Library/PrivateFrameworks/DVTInstrumentsFoundation.framework/DTServiceHub"
  "EnvironmentVariables" => {
    "LIB_PATH" => "/usr/local/lib/node_modules/appium//node_modules/appium-instruments/thirdparty/iwd7/"
    "DYLD_INSERT_LIBRARIES" => "/usr/local/lib/node_modules/appium//node_modules/appium-instruments/thirdparty/iwd7/DTMobileISShim.dylib"
  }
  "JetsamProperties" => {
    "JetsamMemoryLimit" => 0
  }
  "POSIXSpawnType" => "Adaptive"
  "MachServices" => {
    "com.apple.instruments.deviceservice.xpc" => 1
    "com.apple.instruments.deviceservice.lockdown" => 1
  }
  "EnableTransactions" => 1
  "Label" => "com.apple.instruments.deviceservice"
}
tba $ sudo /usr/libexec/PlistBuddy -c "Add :TestTestTest dict" "$SOME_PLIST_PATH" || echo "failed"
Password:
tba $ plutil -p "$SOME_PLIST_PATH"
{
  "Program" => "/Developer/Library/PrivateFrameworks/DVTInstrumentsFoundation.framework/DTServiceHub"
  "EnvironmentVariables" => {
    "LIB_PATH" => "/usr/local/lib/node_modules/appium//node_modules/appium-instruments/thirdparty/iwd7/"
    "DYLD_INSERT_LIBRARIES" => "/usr/local/lib/node_modules/appium//node_modules/appium-instruments/thirdparty/iwd7/DTMobileISShim.dylib"
  }
  "JetsamProperties" => {
    "JetsamMemoryLimit" => 0
  }
  "POSIXSpawnType" => "Adaptive"
  "TestTestTest" => {
  }
  "MachServices" => {
    "com.apple.instruments.deviceservice.xpc" => 1
    "com.apple.instruments.deviceservice.lockdown" => 1
  }
  "EnableTransactions" => 1
  "Label" => "com.apple.instruments.deviceservice"
}

Answer 1

PlistBuddy没有很好的文档记录（我无法在developer.apple.com上找到它的手册页）所以很可能Apple希望使用它的高级用户（和开发人员）只是知道在弄乱root拥有的plist文件时需要调用sudo。

我建议在bugreporter.apple.com上提交增强请求，并建议他们添加＆＃34; -v＆＃34; （对于Verbose）选项PlistBuddy打印出添加或删除的结果。

现在，您只需打印出您尝试设置的设置，如果它不起作用，则设置失败。

Answer 2

在我发现我没有entitlements.plist的写入权限之前，我一直默默地失败，所以请确保您始终拥有对您正在编辑的.plist的写入权限。

另一个选择是使用plutil，它不会无声地失败。

PlistBuddy默默地失败了 - bug？

2 个答案: