如何通过Perl模块获取图像的元数据? [英] How can you get the metadata of an image by the Perl module?

问题描述

我通过MacPorts安装了以下组件:

I installed the following component by MacPorts:

p5-image-info @1.16 (perl, graphics)
Extract meta information from image files

在其网站中说，您可以使用通过

It says in its website that you can use it by

   Usage is something like this:

   use Image::Info qw(image_info);

   @info = image_info("filename");
   $refto_hash_describing_1st_image = $info[0];
   $refto_hash_describing_2nd_image = $info[1];

但是，我跑步失败

$perl  use Image::Info qw(image_info);
-bash: syntax error near unexpected token `('
$

如何通过Perl模块获取图像的元数据?

推荐答案

描述的语法是您如何在Perl脚本中使用它，不是如何将其作为单行代码使用.外壳.

The syntax described is how you would use it within a Perl script, not how you can use it as a single line from the shell.

将其放入.pl文件中(例如"image_info.pl"):

Put this in a .pl file (e.g. "image_info.pl"):

#!/usr/bin/perl -w
use strict;
use Image::Info qw[image_info];
use Data::Dumper;

while (@ARGV) {
  print Dumper(image_info(shift));
}

然后运行它:

$ ./image_info.pl file.jpg

陶醉其中，它将告诉您...

and revel in the masses of information it will tell you...

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