plist(property list)是一种文件组织形式，通常用于储存用户设置，或者用于存储捆绑的信息，在iOS开发中是一种很常用的数据存储格式。除了可以手动操作之外，mac还提供了使用指令操作plist文件的工具---PlistBuddy,在使用脚本修改plist文件时非常有用.
PlistBuddy是Mac OS操作系统自带的操作工具，不过Mac OS并没有在环境变量中默认配置该工具，所以不能在全局使用，只能通过路径引用.
/usr/libexec/PlistBuddy当然如果你对该工具的使用特别频繁，你可以将其拷贝到
/usr/local/bin目录下，就可以在全局使用.使用PlistBuddy -h查看一下支持的基本操作：
Command Format: Help - Prints this information Exit - Exits the program, changes are not saved to the file Save - Saves the current changes to the file Revert - Reloads the last saved version of the file Clear [<Type>] - Clears out all existing entries, and creates root of Type Print [<Entry>] - Prints value of Entry. Otherwise, prints file Set <Entry> <Value> - Sets the value at Entry to Value Add <Entry> <Type> [<Value>] - Adds Entry to the plist, with value Value Copy <EntrySrc> <EntryDst> - Copies the EntrySrc property to EntryDst Delete <Entry> - Deletes Entry from the plist Merge <file.plist> [<Entry>] - Adds the contents of file.plist to Entry Import <Entry> <file> - Creates or sets Entry the contents of file Entry Format: Entries consist of property key names delimited by colons. Array items are specified by a zero-based integer index. Examples: :CFBundleShortVersionString :CFBundleDocumentTypes:2:CFBundleTypeExtensions Types: string array dict bool real integer date data Examples: Set :CFBundleIdentifier com.apple.plistbuddy Sets the CFBundleIdentifier property to com.apple.plistbuddy Add :CFBundleGetInfoString string "App version 1.0.1" Adds the CFBundleGetInfoString property to the plist Add :CFBundleDocumentTypes: dict Adds a new item of type dict to the CFBundleDocumentTypes array Add :CFBundleDocumentTypes:0 dict Adds the new item to the beginning of the array Delete :CFBundleDocumentTypes:0 dict Deletes the FIRST item in the array Delete :CFBundleDocumentTypes Deletes the ENTIRE CFBundleDocumentTypes array
Plist中并没有提供专门的初始化命令，不过可以借助shell自带的命令来完成初始化创建.
#1.初始化一个test.plist文件
touch test.plist
#2.指定文件格式和编码格式
echo "<?xml version="1.0" encoding="UTF-8"?><plist version="1.0"><dict></dict></plist>" > test.plist
# -c 表示直接执行后边的指令,否则会进入人机交互模式
# Add 指令后有一个空格,然后跟上需要添加的key
# string 表示要添加的value的数据类型，然后跟上value的值
PlistBuddy -c "Add :CFBundleIdentifier string Ericydong.WeChatCodesign" test.plist
添加一个集合#添加集合需要两步走
#1. 添加集合
#2. 添加元素
#数组
PlistBuddy -c "Add :UISupportedInterfaceOrientations array" test.plist
PlistBuddy -c "Add : UISupportedInterfaceOrientations:0 string UISupportedInterfaceOrientations" tst.plist
#字典
PlistBuddy -c "Add :UIApplicationSceneManifest dict" test.plist
PlistBuddy -c "Add :UIApplicationSceneManifest:UIApplicationSupportsMultipleScenes bool false" test.plist
#要删除某个key对应的全部内容
PlistBuddy -c "Delete :CFBundleIdentifier" test.plist
#删除数组中的指定下标元素
PlistBuddy -c "Delete :UISupportedInterfaceOrientations:0" test.plist
#删除字典中的指定的key
PlistBuddy -c "Delete :UIApplicationSceneManifest:UIApplicationSupportsMultipleScenes" test.plist
#要修改的value在最外层
PlistBuddy -c "Set :CFBundleIdentifier Ericydong.WeChatCodesignNew" test.plist
#要修改的value在字典中
PlistBuddy -c "Set :UIApplicationSceneManifest:UIApplicationSupportsMultipleScenes true" test.plist
#要修改的value在数组中
PlistBuddy -c "Set :UISupportedInterfaceOrientations:0 UIInterfaceOrientationLandscapeLeft" test.plist
#查询整个plist
PlistBuddy -c "Print" test.plist
#查询最外层的key
PlistBuddy -c "Print :CFBundleIdentifier" test.plist
#查询数组中的元素
PlistBuddy -c "Print :UISupportedInterfaceOrientations:0" test.plist
#查询字典中的元素
PlistBuddy -c "Print :UIApplicationSceneManifest:UIApplicationSupportsMultipleScenes" test.plist
#重新创建一个test2.plist,然后将test.plist合并到test2.plist中
PlistBuddy -c "Merge test.plist" test2.plist
#清空test.plist中的所有value，保留根字典
PlistBuddy -c "Clear" test.plist
#清空以后是这个样子
Dict {
}
#使用Copy命令
#注意：Copy命令只能新增属性，不会覆盖已有属性.例如以下指令如果CFTargetName已经存在，则会抛出异常并不会覆盖原来的值（Copy: ":CFBundleIdentifiernew" Entry Already Exists）
PlistBuddy -c "Copy :CFBundleIdentifier : CFTargetName" test.plist
