与exiftool逆向匹配(Inverse matching with exiftool)

 我基于exiftool的subject伪标记中的内容对图片进行排序，通常看起来像这样： 
 
 15: D101-5-12 1: Elephas maximus 16: Bob 
 
 通常我会根据第二行中的物种名称对图像进行排序，但是，对于某些图像，第二行缺失，我想过滤这些图像。 
 
 图片之间的第一行和第三行有很大差异，所以我无法利用这些。 相反，我一直在尝试各种围绕此主题提出的“反向匹配”方法，但没有成功。 例如，以下不起作用： 
 
exiftool -r -if '\$subject=~/^((?!1:\s).)*$/i' \
'-Filename=./image_sorted/%f%+c%E' image_directory
 
 有关如何使用exiftool做到这一点的任何想法？ 

I am sorting pictures based on the contents in the subject pseudo tag of exiftool, which generally look something like this:
 
15: D101-5-12 1: Elephas maximus 16: Bob
 
Usually I sort the images based on the species name in the second line, however, for some images the second line is missing and I would like to filter these images out.
 
The first and third line vary a lot between pictures, so I am unable to utilise these. Instead, I have been trying various 'inverse matching' methods suggested on other questions surrounding this topic, but with no success. For example, the following does not work:
 
exiftool -r -if '\$subject=~/^((?!1:\s).)*$/i' \
'-Filename=./image_sorted/%f%+c%E' image_directory
 
Any ideas on how to do this with exiftool? 

原文：https://stackoverflow.com/questions/50526638