Bash-查找匹配的文件对
问题描述：
我的文件夹中有很多文件:
I have many files in the folder:
Filename1.mp4
Filename2.mp4
Filename3.mp4
Etc.
以及许多带有后缀名称的文件:
As well as many files with added suffix to the name:
Filename1_x264.mp4
Filename2_x264.mp4
Filename3_x264.mp4
Etc.
我正在尝试使用find命令捕获匹配对，并在它们上执行外部命令，但是还没有找到一种方法来做到这一点.
任何想法将不胜感激.
I am trying to catch the matching pairs using find command and execute an external command on them but can't figure out a way to do it yet.
Any ideas would be greatly appreciated.
答
使用bash及其参数扩展:
With bash and its Parameter Expansion:
for i in *_x264.mp4; do
j="${i%*_x264.mp4}.mp4" # remove suffix _x264.mp4 and add .mp4
if [[ -e "$j" ]]; then
echo "$i and $j exists"
fi
done