On Jun 10, 2020, at 4:51 PM, Qijia Liu <liumeo@pku.edu.cn> wrote:Hello,The man page says that if the --newer option takes a file instead of date, that file’s ctime is used as the date. However, https://www.gnu.org/software/tar/manual/tar.html says the file’s mtime should be used. Please check that.Sincerely,Liumeo