例子:
[root@local] current=`date "+%Y-%m-%d %H:%M:%S"`
[root@local] timeStamp=`date -d "$current" +%s`
# 输出13位长整型时间戳
[root@local] ts=$timeStamp"000"
[root@local] echo ${ts}
[root@local] dateTime=`date -d "+0 day" +%Y%m%d%H%M%S`
[root@local] echo ${dateTime}
[root@local] dateDay=`date -d "-0 day" +%Y%m%d`
[root@local] echo ${dateDay}