“'file -mime-type”和“mimetype”命令返回不同的结果

Question

嗨，我想弄清楚为什么PHP会返回一个‘m刀’文件类型，而它应该是'excel‘，所以已经使用' file’和'mimetype‘命令在我的Ubuntu框上进行了测试。从下面的结果可以看出，它们返回不同的结果。有人能解释原因吗？

root@dev:~# file --mime-type 1.xls
1.xls: application/msword
root@dev:~# mimetype 1.xls
1.xls: application/vnd.ms-excel

我还应该注意到，所讨论的文件是在Windows上返回“m刀”。它是使用PHPExcel生成的。

谢谢你的帮助。

Answer 1

用于.deb包的两个工具之间也有类似的区别。

文件似乎使用/etc/mime.types，而mimetype使用更多XDG_DATA_DIRS (来自man mimetypes)的复杂混合：

ENVIRONMENT
       XDG_DATA_HOME
       XDG_DATA_DIRS
           These variables can list base directories to search for data files. The shared mime-info will be expected in the "mime" sub directory of one of these directories. If these are not set,
           there will be searched for the following directories:

                   $HOME/.local/share/mime
                   /usr/local/share/mime
                   /usr/share/mime

           See also the "XDG Base Directory Specification" http://freedesktop.org/Standards/basedir-spec <http://freedesktop.org/Standards/basedir-spec>

FILES
       The base dir for all data files is determined by two environment variables, see "ENVIRONMENT".

       BASE/mime/packages/SOURCE.xml
           All other files are compiled from these source files. To re-compile them use update-mime-database(1).

       BASE/mime/globs
           Compiled information about globs.

       BASE/mime/magic
           Compiled information about magic numbers.

       BASE/mime/MEDIA/SUBTYPE.xml
           Descriptions of a mimetype in multiple languages, used for the "--describe" switch.

Answer 2

我花了一段时间才找到它，但我能够在debian上安装mimetype。

sudo apt-get install libfile-mimeinfo-perl

现在，我将application/vnd.ms-excel作为.xls而不是application/msword。