您可以将这个 find 与 sed 一起使用:

You can use this find with sed:

cd to /path/of/pdfs

while IFS= read -rd '' line; do
   echo mv "$line" $(sed 's~\./[a-zA-Z]*\([0-9]*[a-zA-Z]\).*\(\.pdf\)$~\1\2~' <<< "$line")
done < <(find . -maxdepth 1 -regex '\./[a-zA-Z]*[0-9]*[a-zA-Z]\{1,\}\.pdf$' -print0)

确认其正常运行后，

删除 echo .

Remove echo after you verify it is working.