Modify time and time zone under Linux

First, the time to modify Linux
Under root user, use the date command: date-s
1. Only modify the date, do not modify the time, enter:

-Geneva-

2. Modify the time only, enter:

:xx 

3. Also modify the date time, note to add single/double quotation marks, date and time there is a space between, enter:

" 2015-03-06 14:15:00 "

4, after the modification, the system time to write to the CMOS, input:

Clock-w

Second, modify the time zone does not restart
Under the root user
Copy the appropriate time zone file and replace the system time zone file:

cp/usr/share/zoneinfo/$ main time zone/$ times time zone/etc/localtime

For example:

Cp/usr/share/zoneinfo/asia/shanghai/etc/localtime

Modify time and time zone under Linux