bash OSX - 如何从命令行获取文件的创建和修改时间
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OSX - How to get the creation & modification time of a file from the command line
提问by Mr_Pouet
While solving some programming puzzle, I wanted to see how long it took me to write a solution to the problem. To do so, I thought it'd be a good idea to compare the file creation date with the latest modification date.
在解决一些编程难题的同时，我想看看我写了一个问题的解决方案花了多长时间。为此，我认为将文件创建日期与最新修改日期进行比较是个好主意。
In the terminal (OSX), I tried the following command and was surprised to see the same date three times in a row:
在终端 (OSX) 中，我尝试了以下命令，并惊讶地看到连续 3 次出现相同的日期：
stat my_file.py
16777220 10280844 -rw-r--r-- 1 username staff 0 7214 \
"Dec 5 08:32:39 2015" \
"Dec 5 08:32:39 2015" \
"Dec 5 08:32:39 2015" \
"Dec 5 08:32:39 2015" 4096 16 0 my_file.py
The way I created then modified the file:
我创建的方式然后修改了文件：
touch my_file.py
vim my_file.py # <- modify some content
stat my_file.py
Any idea on how to get these two dates from the command line?
关于如何从命令行获取这两个日期的任何想法？
Clarification: I do not want to time the execution time of the script.
澄清：我不想为脚本的执行时间计时。
EDIT: The issue was with vim changing the creation date on save, the accepted answer still answers the question in depth for those who are interested.
编辑：问题在于vim在保存时更改了创建日期，接受的答案仍然为感兴趣的人深入回答了这个问题。
回答by blm
statreports the standard Unix dates, last access time, last modification time, and inode change time (which is often mistaken for creation time). Mac OS X also maintains the file creation time, and it's accessible using the GetFileInfocommand:
stat报告标准 Unix 日期、上次访问时间、上次修改时间和 inode 更改时间（经常被误认为是创建时间）。Mac OS X 还维护文件创建时间，可以使用以下GetFileInfo命令访问：
$ GetFileInfo -d .bash_profile
10/08/2015 09:26:35
Here's a more complete example:
这是一个更完整的示例：
$ ls -l my_file.py
ls: my_file.py: No such file or directory
$ touch my_file.py
$ stat -x my_file.py
File: "my_file.py"
Size: 0 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 13:47:24 2015
Change: Sun Dec 6 13:47:24 2015
$ GetFileInfo my_file.py
file: "/Users/blm/my_file.py"
type: "stat -f "Access (atime): %Sa%nModify (mtime): %Sm%nChange (ctime): %Sc%nBirth (Btime): %SB" file.txt
Access (atime): Nov 16 19:44:55 2017
Modify (mtime): Nov 16 19:44:25 2017
Change (ctime): Nov 16 19:44:48 2017
Birth (Btime): Nov 16 19:44:05 2017
##代码####代码####代码##"
creator: "##代码####代码####代码####代码##"
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: "##代码####代码####代码####代码##"
creator: "##代码####代码####代码####代码##"
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: "##代码####代码####代码####代码##"
creator: "##代码####代码####代码####代码##"
attributes: avbstclinmedz
created: 12/06/2015 13:47:24
modified: 12/06/2015 13:47:35
Note that using vimto test this may be misleading because vimwill write your modified file to a new temporary file, then rename the old one and the new one, so the creation time will be updated to when the file was written. See this postfor a workaround I came up with for that.
请注意，使用vim来测试这可能会产生误导，因为vim会将您修改的文件写入一个新的临时文件，然后重命名旧文件和新文件，因此创建时间将更新为写入文件的时间。请参阅这篇文章，了解我为此提出的解决方法。
回答by wisbucky
As you already identified, the real culprit was that vimresets all 4 datetime stamps.
正如您已经确定的，真正的罪魁祸首是vim重置所有 4 个日期时间戳。
But to answer your original question, here is a statformatting for Mac OSX that will clearly show the 4 datetime stamps (including Creation/Birth and Modify):
但是为了回答您的原始问题，这里是statMac OSX的格式，它将清楚地显示 4 个日期时间戳（包括创建/出生和修改）：
