linux%date

shell?

linux?date?0

#!/bin/sh

currentHour=$(date+%H)

if

then

currentTime=$(date+%s);

tmp=$(($currentTime-3600));

echo$(date-d"@$tmp"+%Y-%m-%d);

else

echo$(date+%Y-%m-%d);

fi

LinuxdateGMT

1GMT=UTC?UTC

2?date-u?UTC?GMT

3GMTUTC?%s?

linuxdate?

Linux?timestemp/etc/localtime?

localtime?local?GMTlinux?localtime

timestemp

mysql?timestempISOYYYY-MM-DDHH:mm:ss

linux?date?

date

��һƪ:������Ӣ�Z�ķ��g

��һƪ:t radarlab org���_��߀�І�?