How To Use Etc Localtime

Let us see some examples to change timezone or set a new time zone on a centos linux.

How to use etc localtime. On more modern systems this file is merely a symbolic link to text based timezone files stored under usr share zoneinfo region city. The value of timer is broken up into the structure tm and expressed in the local time zone. Open regedit and add a dword value for 32 bit windows or qword for 64 bit one with hexadecimal value 1 to the registry. 1 root root 35 jan 16 22 10 etc localtime usr share zoneinfo europe oslo. Struct tm localtime const time t timer.

Use one of the following methods to change the timezone on your linux system. Ls l etc localtime lrwxrwxrwx. The c library function struct tm localtime const time t timer uses the time pointed by timer to fill a tm structure with the values that represent the corresponding local time. To dual boot with windows it is recommended to configure windows to use utc rather than linux to use localtime. Assume we have timezone utc.

Change timezone on a centos 6 and 7. 1 root root 25 jul 11 16 06 etc localtime usr share zoneinfo utc root kerneltalks ls lrt usr share zoneinfo total 284 rw r r. Check the current timezone using etc localtime file. Change timezone using etc localtime file. Date mon feb 18 18 40 10 ist 2019.

Ls lh etc localtime lrwxrwxrwx. Root kerneltalks ll etc localtime lrwxrwxrwx. If you check your current file its a soft link to respective timezone file in usr share zoneinfo directory. Windows by default uses localtime. Following is the declaration for localtime function.

If the tz env variable is not set glibc will go look at the etc localtime file every time or rather it will check if etc localtime has changed since the last time it was read which is what the stat calls does nos sep 24 14 at 15 38. Cd etc localtime is a symbolic link so we can remove it rm localtime all timezones are located under. 2 cat etc localtime will give the current time zone of the server. You would like to change this to pacific. The timezone information is universally kept under etc localtime.