01.wish you well.flac  ===> 01.flac
02.满足.flac           ===> 02.flac
03.被爱是钻石.flac     ===> 03.flac
04.相见恨晚.flac       ===> 04.flac
05.快乐的分手.flac     ===> 05.flac
06.太怕寂寞.flac       ===> 06.flac
07.分心.flac           ===> 07.flac
08.哄我吧.flac         ===> 08.flac
09.不明是非.flac       ===> 09.flac
10.自然的爱.flac       ===> 10.flac

[此贴子已经被作者于2018-12-27 11:36编辑过]

#!/bin/bash
files=$(ls *.flac)
for name in ${files[*]}
do
    num=$(echo $name | cut -d '.' -f 1)
    mv $name "$num.flac"
done

当前目录 bash 里执行