我的文件夹中有多个文件，其名称格式为
01. file one-sdvanv-12lknl.srt
01. file one-sdvanv-12lknl.mp4
02. file two-afdsmakl-asdfafdaf.srt
02. file two-afdsmakl-asdfafdaf.mp4
03. file three-adfadaasd-asdfadfafad-adad1d1das.srt
03. file three-adfadaasd-asdfadfafad-adad1d1das.mp4
现在如何在删除字符串后-使文件名看起来像这样
01. file one.srt
01. file one.mp4
02. file two.srt
02. file two.mp4
03. file three.srt
03. file three.mp4
for file in *; do
ext=.${file##*.} #Gets file extension
[ "$ext" = ".$file" ] && ext="" #If file had no extension, set it to empty string
nostr=${file%%-*} #Remove everything after -
mv "$file" "$nostr$ext"
done
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