sudo find /usr -perm /a=xとsudo find /usr -executableの違いは何ですか？

Question

によるとman find：

   -perm /mode
          Any  of the permission bits mode are set for the file.

だから-perm /a+xファイルと一致しますどの実行可能ビットがセットされています。

   -executable
          Matches  files  which  are  executable and directories which are
          searchable (in a file name resolution sense).  This  takes  into
          account  access  control  lists  and other permissions artefacts
          which the -perm test  ignores.   This  test  makes  use  of  the
          access(2) system call, and so can be fooled by NFS servers which
          do UID mapping (or root-squashing), since many systems implement
          access(2)  in  the client's kernel and so cannot make use of the
          UID mapping information held on the server.  Because  this  test
          is  based only on the result of the access(2) system call, there
          is no guarantee that a file for which  this  test  succeeds  can
          actually be executed.

これは-executableファイルと一致します。現在、ユーザーはaccess()システムコールに基づいてアクセスできます。。

Answer 1

によるとman find：

   -perm /mode
          Any  of the permission bits mode are set for the file.

だから-perm /a+xファイルと一致しますどの実行可能ビットがセットされています。

   -executable
          Matches  files  which  are  executable and directories which are
          searchable (in a file name resolution sense).  This  takes  into
          account  access  control  lists  and other permissions artefacts
          which the -perm test  ignores.   This  test  makes  use  of  the
          access(2) system call, and so can be fooled by NFS servers which
          do UID mapping (or root-squashing), since many systems implement
          access(2)  in  the client's kernel and so cannot make use of the
          UID mapping information held on the server.  Because  this  test
          is  based only on the result of the access(2) system call, there
          is no guarantee that a file for which  this  test  succeeds  can
          actually be executed.

これは-executableファイルと一致します。現在、ユーザーはaccess()システムコールに基づいてアクセスできます。。

sudo find /usr -perm /a=xとsudo find /usr -executableの違いは何ですか？

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