xcode – install_name_tool -change和-id之间的区别

-id name
              Changes  the  shared  library identification name of a dynamic shared library to name.  If the Mach-O binary is not a dynamic
              shared library and the -id option is specified it is ignored.

-change old new
              Changes  the dependent shared library install name old to new in the specified Mach-O binary.  More than one of these options
              can be specified.  If the Mach-O binary does not contain the old install name in a specified -change  option  the  option  is
              ignored.

到目前为止,我已经尝试过-change.假设我有以下结构

Test.App
|_Contents
    |_MacOS
    |   |_test -----> item A
    |_Library
        |_@R_675_9214@library.dylib     --->item B
        |_another_library.dylib  --->item C

现在假设我在itemB上运行了以下命令

$otool -L @R_675_9214@library.dylib
   @R_675_9214@library.dylib
   /some/path/another_library.dylib  -->item D

上面的结果表明,如果我需要更改another_library.dylib的位置,@R_675_9214@library.dylib现在依赖于another_library.dylib我会这样做

install_name_tool -change /some/path/another_library.dylib some/new/path/another_library.dylib  @R_675_9214@library.dylib

这会改变项目D的位置.我的问题是install-name_tool -id做什么以及何时使用它？