Configure Time Zone
===========================
The first thing that we need to do after installing server OS
is to configure time zone.
1. List all available time zones in CentOS; press q to exit.
timedatectl list-timezones
2. Set time zone to Asia/Phnom_Penh
timedatectl set-timezone Asia/Phnom_Penh
3. View the current time zone and make sure that Asia/Phnom_Penh is there
ls -l /etc/localtime
4. To shut down the server
#init 0
5. To restart the server
#init 6
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