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Full Discussion: Regarding Daylight Setting
Operating Systems AIX Regarding Daylight Setting Post 302945801 by bakunin on Wednesday 3rd of June 2015 03:26:06 AM
Old 06-03-2015
Quote:
Originally Posted by aix.rockie
To disable the Daylight Saving, whether reboot is required or not?
Daylight savings is part of the "timezone" setting, which in turn is part of the environment for every process. You can (in principle) set different timezone settings for each process you start by modifying the "TZ" variable.

This means that no reboot is necessary at all. If you have an application the system runs this application usually runs under a certain user-ID for this purpose. Set the "TZ" variable either in this users environment and then restart the application to make sure all processes are started with the new setting or change the machine-wide setting itself (you can use SMIT for this).

You may want to reboot your system anyway to make sure every running process has definitely this new setting in its environment but this is not required at all, it would be more of a "make 110% sure"-measure.

I hope this helps.

bakunin
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REBOOT(2)							System Calls Manual							 REBOOT(2)

NAME
reboot - close down the system or reboot SYNTAX
#define _MINIX_SOURCE 1 #include <unistd.h> int reboot(int how, ...) DESCRIPTION
Reboot() is used to close down the system. It allows several ways of shutting down depending on how: reboot(RBT_HALT) Halt the system and return to the monitor prompt. reboot(RBT_REBOOT) Reboot the system by letting the monitor execute the "boot" command. reboot(RBT_PANIC) Cause a system panic. This is not normally done from user mode, but by servers using the sys_abort() kernel call. reboot(RBT_MONITOR, code, length) Halt the system and let the monitor execute the given code of the given length. (code is of type char * and length of type size_t.) reboot(RBT_RESET) Reboot the system with a hardware reset. Reboot() may only be executed by the super-user. DIAGNOSTICS
If the call succeeds, it never returns. If something went wrong, the return value is -1 and an error is indicated by errno. SEE ALSO
shutdown(8), reboot(8), halt(8), sync(1). NOTES
Minix can not return to the monitor if running in real mode, or if started from MS-DOS. This means that most of the reboot functions will change to a reset. AUTHOR
Edvard Tuinder (v892231@si.hhs.NL) REBOOT(2)
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