Summary:GMT/UTC/CST;/etc/localtime,/usr/share/zoneinfo/* time zone file,/etc/profile plus TZ variable;Hardware time RTC, system time; date,hwclock,tzselect;NTP relay SERVER;RPM–IVH ntp-*;ntpdate 0.uk.pool.ntp.org; Ntpq–p,watch
Network time Protocol (NTP) is also a new exam requirement for RHCE. Study time also by the way to review how to set up Linux time, now take out and share with youSetting up an NTP server is not difficult, but NTP itself is a very complex protocol.
remark: article reproduced from: http://www.cnblogs.com/liuyou/archive/2012/07/29/2614338.html
Summary:
GMT/UTC/CST;
/etc/localtime,/usr/share/zoneinfo/* time zone file,/etc/profile plus TZ variable;
Hardware time RTC, system time;
On the basis of the Linux system after installation--based on CentOS (5.8/6.4)--we mentioned how to automatically update the server time at timed intervals. Also mentioned, when the number of intranet machines, if all go to the public network NTP
After obtaining the time through the date () function, it is found that the hour time is incorrect, which is 8 hours less than the current time. Both H and h are the same, this is because the Greenwich Mean Time is obtained, which is 8 hours
Linux ntp time server configuration tutorial, ntp server configuration
Network Time Protocol (NTP) is also a new test requirement for RHCE. During study, I also reviewed how to set the Linux Time. Now I will share it with you.
It is not difficult
Set the Beijing time function date_default_timezone_set () in the php Tutorial ()Definition and usageThe date_default_timezone_set () function is used to set the default time zone of all date/time functions in the
PHP Tutorial Set the Date_default_timezone_set function ()
Definition and usage
The Date_default_timezone_set () function sets the default time zone for all date/time functions used in the script.
GrammarDate_default_timezone_set (TimeZone)
$
Php sets the Beijing time function date_default_timezone_set (). In the php Tutorial, set the definition and usage of the Beijing time function date_default_timezone_set () to the default time zone of all date and time functions in the script.
Set the Beijing time function date_default_timezone_set () in the php tutorial ()Definition and usageThe date_default_timezone_set () function is used to set the default time zone of all date/time functions in the script.
SyntaxDate_default_timezone_
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