1、当前时间[app@127-0-0-1 shine]$ date Wed Oct 23 11:44:30 CST 2019 2、修改时间[app@127-0-0-1 shine]$ date -s "2019-10-23 12:00:00" Wed Oct 23 12:00:00 CST 2019 3、检查时间[app@127-0-0-1 shine]$ date Wed Oct 23 12:00:05 CST 2019