View modify Linux time zone and time

View/modify Linux time zone and time
One, time zone
1. View the current time zone
Date-r
2. Modify the settings time zone
Tzselect
3. Copy the appropriate time zone file, replace the system time zone file, or create a linked file
cp/usr/share/zoneinfo/$ main time zone/$ times time zone/etc/localtime
Can be used in China:
Cp/usr/share/zoneinfo/asia/shanghai/etc/localtime

Second, time
1. Check the time and date
Date
2. Set time and date
command to set the system date to June 10, 1996
Date-s 06/22/96
command to set the system time to 1:52 P.M. 0 seconds
Date-s 13:52:00
3. Write the current time and date to the BIOS to avoid failure after reboot
Hwclock-w

4. Check the BIOS (hardware) time

Hwclock--show or Hwclock-r

Three, timing synchronization time
* * * * * */usr/sbin/ntpdate 210.72.145.44 >/dev/null 2>&1

View modify Linux time zone and time