echo $TZ printing nothing

gajananh999 · 06-24-2013, 02:19 AM

Dear All,

I am using a 64 bit machine its amazon ec2 machine.
i did this to set the timezone

cp -v --remove-destination /usr/share/zoneinfo/Asia/Calcutta /etc/localtime

but when i do echo $TZ it is printing null.

Can anyone tell me why this is happening.

Thanks
Gajanan Hiroji

evo2 · 06-24-2013, 02:28 AM

Hi,

are you sure this is the correct way to change the timezone? What OS is running on the ec2 instance?

Also, you shouldn't expect the value of TZ to change in the existing shell: you should at least open a new shell.

Evo2.

gajananh999 · 06-24-2013, 02:38 AM

Dear Evo2

Last time also i have changed the TZ in same way. Its linux 64 bit machine.

evo2 · 06-24-2013, 02:45 AM

Hi,

Quote:

Originally Posted by gajananh999

Last time also i have changed the TZ in same way.

Ok...

Quote:

Its linux 64 bit machine.

Can you be more specific about the OS? Eg what is the output of:

Code:

lsb_release --all

Evo2.

gajananh999 · 06-24-2013, 02:48 AM

Here It is

$ lsb_release --all
LSB Version: :core-3.1-amd64:core-3.1-ia32:core-3.1-noarch:graphics-3.1-amd64:graphics-3.1-ia32:graphics-3.1-noarch
Distributor ID: EnterpriseEnterpriseServer
Description: Enterprise Linux Enterprise Linux Server release 5.4 (Carthage)
Release: 5.4
Codename: Carthage

Gajanan

gajananh999 · 06-24-2013, 03:09 AM

Can Anyone please reply me on this.

evo2 · 06-24-2013, 03:13 AM

Hi,

ok, so it seems to be a RHEL 5.4 rebuild/clone. So what you did should work for setting the timezone, but you should not necessarily expect the TZ environment variable to be set in your shell. Furthermore, if TZ was not set before you changed /etc/timezone, the is no reason to expect it to be set after you changed /etc/timezone.

Do you get the expected Calcutta time when you run date?

Evo2.

gajananh999 · 06-24-2013, 05:01 AM

Dear EVo2

Yes i get calcutta time.