如果使用rdiff-backup命令对某个特定date进行了备份，那么应该给予该特定date的文件的格式是什么。
rdiff-bakup -r "dateformat" backup/a.txt /destination-dir 谢谢..
从rdiff-backup（1）手册：
5. A date format of the form YYYY/MM/DD, YYYY-MM-DD, MM/DD/YYYY, or MM-DD-YYYY, which indicates midnight on the day in question, relative to the current timezone settings. For instance, "2002/3/5", "03-05-2002", and "2002-3-05" all mean March 5th, 2002.