topic Re: Timezone issue . . . in Operating System - HP-UX

Timezone issue . . .

piyush mathiya — Tue, 08 Jul 2008 19:09:38 GMT

Gurus,
I have some issue in tz. Please check the below output which can use to diagnose the exect problem. . .

Thanks & Regards,
Piyush Mathiya

=============================================
######### Defined time zone #############
# echo $TZ
CST6CDT
# cat /etc/default/tz
CST6CDT
# date
Tue Jul 8 14:52:28 CDT 2008
# env | grep -i tz
TZ=CST6CDT
######### In profile ####################
# cat /etc/profile | grep -i tz
TZ=MST7MDT # change this for local time.
######### In login time #################
Last successful login for mssun: Mon Jul 7 22:21:13 EST5EDT 2008
Last unsuccessful login for mssun: Mon Jul 7 15:18:07 EST5EDT 2008 on
Your password will expire on Fri Jul 11 19:23:00 EST5EDT 2008

---------------------------------------------
Can you please check, why it is different Time zone. My main proble is which TZ value "login" command is use.

Re: Timezone issue . . .

Tim Nelson — Tue, 08 Jul 2008 19:14:42 GMT

The TZ setting in /etc/profile will override all others.

Re: Timezone issue . . .

piyush mathiya — Tue, 08 Jul 2008 19:52:10 GMT

Tim,
Thanks for the reply, But my question is why it is showing EST5EDT after login.

Regards,
Piyush Mathiya

Re: Timezone issue . . .

SKR_1 — Tue, 08 Jul 2008 20:05:47 GMT

Dear Piyush,

Check /etc/TIMEZONE file.

Thanks,

Sunil

Re: Timezone issue . . .

Tim Nelson — Tue, 08 Jul 2008 20:15:16 GMT

Sorry, did not see the difference between MST7MDT and EST5EDT, ooops.

Then /etc/TIMEZONE may be the place to look.

Re: Timezone issue . . .

piyush mathiya — Tue, 08 Jul 2008 21:11:07 GMT

It is also like this,
# cat /etc/TIMEZONE
TZ=CST6CDT
export TZ

And I think at the time of login TZ is showing EST5EDT, and after that with the use of /etc/TIMEZONE, it is changing to CST6CDT. "EST5EDT" is the time zone which may be define at the installation time. What you are thinking?

Regards,
Piyush Mathiya

Re: Timezone issue . . .

Armin Kunaschik — Wed, 09 Jul 2008 08:18:32 GMT

Since TZ is an environment variable it's inherited by the parent process.
Changing variables in files (any location) does not change the environment of any running processes.
So if you change TZ and do not restart sshd/inetd etc, the process will use the old TZ. Even if you change TZ in the login profile, the process will display the wrong time... remember: the login messages are not display by the shell!

The (probably) easiest way would be to reboot the system... that "restarts" all processes.

My 2 cents,
Armin

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