Macbook 终端Terminal下如何查看文件生成日期和修改日期

有时候在用vim命令修改配置文件时，不确定是否被修改，为了与旧版本比较，最好查一下文件生成和修改日期，方法如下：

$ GetFileInfo my_file.py
file: "/Users/blm/my_file.py"
type: "\0\0\0\0"
creator: "\0\0\0\0"
attributes: avbstclinmedz
created: 12/06/2015 13:47:24
modified: 12/06/2015 13:47:24
$ echo hello >my_file.py
$ stat -x my_file.py
  File: "my_file.py"
  Size: 6            FileType: Regular File
  Mode: (0644/-rw-r--r--)         Uid: (  501/     blm)  Gid: (   20/   staff)
Device: 1,5   Inode: 26863832    Links: 1
Access: Sun Dec  6 13:47:24 2015
Modify: Sun Dec  6 13:47:35 2015
Change: Sun Dec  6 13:47:35 2015
$ GetFileInfo my_file.py
file: "/Users/blm/my_file.py"
type: "\0\0\0\0"
creator: "\0\0\0\0"
attributes: avbstclinmedz
created: 12/06/2015 13:47:24
modified: 12/06/2015 13:47:35
$ cat my_file.py
hello
$ stat -x my_file.py
  File: "my_file.py"
  Size: 6            FileType: Regular File
  Mode: (0644/-rw-r--r--)         Uid: (  501/     blm)  Gid: (   20/   staff)
Device: 1,5   Inode: 26863832    Links: 1
Access: Sun Dec  6 13:47:54 2015
Modify: Sun Dec  6 13:47:35 2015
Change: Sun Dec  6 13:47:35 2015
$ GetFileInfo my_file.py
file: "/Users/blm/my_file.py"
type: "\0\0\0\0"
creator: "\0\0\0\0"
attributes: avbstclinmedz
created: 12/06/2015 13:47:24
modified: 12/06/2015 13:47:35