CODEWITHSUNDEEP
linuxunixunix-timestamp
zoo zope
zoo zope

Reputation: 403

How to change system default date time on Debian permanently?

How to change system default date time on Debian permanently?

I tried following command

# date --set="12 MAY 2012 12:12:12 PM"

# hwclock --systoh

But date-time is getting changed temporary.

After few seconds, current date is popping again.

Did I miss something?

Update

System is guest OS on virtual box, where ntp is not enabled.

While ntp is enabled in host OS.

Upvotes: 1

Views: 3899

Answers (3)

Geoff_Clapp
Geoff_Clapp

Reputation: 301

If you have a systemd system then you have to use timedatectl:

timedatectl set-ntp false 
timedatectl set-time '2018-12-12 12:12:12'

Upvotes: 1

Manolo
Manolo

Reputation: 26380

Just execute this command:

dpkg-reconfigure tzdata

You will be asked for the timezone.

debian docs recommends using tzconfig, but it seems to be deprecated in favor of dpkg-reconfigure tzdata

Upvotes: 2

qwertymaster
qwertymaster

Reputation: 341

Looks like NTP is setting your time over internet.... You need to stop NTP.
Try these commands: 

sudo service ntp stop

To prevent it from starting at boot:

sudo update-rc.d -f ntp remove

You may need to uninstall ntpd if needed. Even though you uninstall ntpd, ntpdate will be still installed in your system. You can add exit status to disable it.
Add exit 0 to /etc/default/ntpdate.

Upvotes: 2

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