使用 cut 命令检索文件名的YYYY-MM-dd部分.并按如下所示使用 date 命令将其转换为time_t类型.

use cut command to retrieve YYYY-MM-dd part of filename. and use date command as following to convert it to time_t type.

日期-d"YYYY-MM-dd" +％s

date -d "YYYY-MM-dd" +%s

然后您可以比较time_t以确定应该删除哪个文件.

then you can compare time_t to determine which file should be deleted.