#子目录按年月日命令，对每个月的子目录进行打包
y='2023' #定义年份
for m in {01..12};do #定义01到12月
ym="$y$m"
echo $ym
if ls $ym* &> /dev/null;then #检查月份文件夹是否存在
echo "$ym* exists,start to tar..."
tar -cf $ym.tar $ym*
else
echo "$ym* not exists."
fi
done
目录格式如下：
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2023-11-24
2023-11-24
2023-11-24
2023-11-19
2023-11-19
2023-11-19
2023-11-18
2023-11-18
2023-11-18
2023-11-17
2024-05-20
2024-05-20
2024-05-20
2024-05-20
2024-05-20
2024-05-20
2024-05-18
2024-05-18
2024-05-17
2024-05-17
2024-05-17
2024-05-17
2024-05-17
2024-05-17
2024-05-17
2024-05-17
2024-05-17
2024-05-17
2024-05-17
2024-05-17