Waktu date menggunakan command line - Revision history

Onnowpurbo: /* Pranala Menarik */

2012-03-11T07:58:04Z

Pranala Menarik

← Older revision		Revision as of 07:58, 11 March 2012
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	==Pranala Menarik==		==Pranala Menarik==

	* [[Linux Howto]]
	* [[NTP]]		* [[NTP]]
	* [[Linux Howto]]		* [[Linux Howto]]

Onnowpurbo at 07:56, 11 March 2012

2012-03-11T07:56:32Z

← Older revision		Revision as of 07:56, 11 March 2012
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	Sumber: http://codeghar.wordpress.com/2007/12/06/manage-time-in-ubuntu-through-command-line/		Sumber: http://codeghar.wordpress.com/2007/12/06/manage-time-in-ubuntu-through-command-line/

	What if you would like to manage your computer’s time in Ubuntu? It’s easy if you are in a graphical desktop environment. But what if you are on the command line? For example, in Ubuntu Server? Well, it is easy as well. A very helpful, everything-in-one-place resource is Ubuntu Time.
	~~View Time~~

	~~To view the current date and time, the following~~ command ~~will be enough~~		Kita dapat memanaged waktu di Ubuntu menggunakan command line. Ini terutama dibutuhkan jika kita sedang melakukan manajemen server

	~~date~~
			==Melihat Waktu==

			Untuk melihat waktu sekarang dapat menggunakan perintah

			data

	==Set Time==		==Set Time==

	~~To change time means to set a new time. To set time in Ubuntu (or any Linux), just run the following command~~		Untuk menset / mengubah waktu dapat menggunakan perintah

	sudo date newdatetimestring		sudo date newdatetimestring

	~~where~~ newdatetimestring ~~has to follow the~~ format nnddhhmmyyyy.ss ~~which is described below~~		Dimana newdatetimestring harus menggunakan format nnddhhmmyyyy.ss berikut

	nn ~~is a two~~ digit ~~month~~, ~~between~~ 01 to 12		nn adalah dua digit bulan, antara 01 s/d 12
	dd ~~is a two~~ digit ~~day~~, ~~between~~ 01 ~~and~~ 31~~, with the regular rules for days according to month and year applying~~		dd adalah dua digit hari, antara 01 s/d 31.
	hh ~~is two~~ digit ~~hour~~, ~~using the~~ 24~~-hour period so it is between~~ 00 ~~and~~ 23		hh adalah dua digit jam, menggunakan perioda 24 jam antara 00 s/d 23.
	mm ~~is two~~ digit ~~minute~~, ~~between~~ 00 ~~and~~ 59		mm adalah dua digit menit, antara 00 s/d 59
	yyyy ~~is the year; it can be two digit or four digit: your choice. I prefer to use four digit years whenever I can for better clarity and less confusion~~		yyyy adalah tahun
	ss ~~is two~~ digit ~~seconds~~. ~~Notice the period ‘~~.~~’ before the ss~~.		ss adalah dua digit detik. Perhatikan ada '.' sebelum detik.

	~~Let’s say you want to set your computer’s new time to~~ December 6, 2007, 22:43:55, ~~then you would use:~~		Contoh jika kita ingin menset waktu komputer ke December 6, 2007, 22:43:55, maka gunakan

	sudo date 120622432007.55		sudo date 120622432007.55

	~~It couldn’t be any easier, could it? The source of this information was a good post on Ubuntu Forums (Set time/date via command line).~~

	==Change Time Zone==		==Change Time Zone==

	~~You may update or change your~~ time zone by		Kita dapat menset time zone menggunakan

	dpkg-reconfigure tzdata		dpkg-reconfigure tzdata

	~~This command will guide you through the process of setting a new~~ time zone~~. You may also choose UTC (GMT) if you want~~.		Perintah ini akan memandu kita untuk mengisi time zone yang benar.

	~~If your system does not have~~ tzdata, install ~~it as below:~~		Jika sistem kita tidak mempunyai tzdata, install melalui perintah

	sudo aptitude install tzdata		sudo aptitude install tzdata

	This will provide a set of different time zones to choose. If you would like to set the time to UTC, choose the option which says something like ‘none of the above’, or ‘none of these’ or something to this effect. In my case it was option 11. Then it asks for difference from UTC (GMT ~~and GST is also the same thing). I chose GST-0 as the option and it set the time as UTC.~~		Peru di catat bahwa
			* Indonesia bagian barat adalah GMT+7
			* Indonesia bagian tengah adalah GMT+8
			* Indonesia bagian timur adalah GMT+9

	==Sync Clock ~~Via~~ NTP==		==Sync Clock melalui NTP==

	~~If you want to sync your~~ clock ~~with~~ NTP ~~servers, it is also very easy~~. ~~Just make sure you have the file~~ ntp.conf ~~file in~~ /etc~~. How can you check it?~~		Sinkronisasi clock menggunakan NTP server juga relatif mudah. Pastikan NTP server sudah terinstalasi dan ada ntp.conf di /etc menggunakan perintah

	ls /etc/ntp.conf		ls /etc/ntp.conf

	~~If you see /etc/ntp.conf as a result, you already have that file. If the ls command gives an error, you do not have it. If so, you may create it yourself.~~		Jika belum ada NTP client kita dapat menginstalasinya menggunakan

			sudo aptitude install ntpdate

			Edit atau buat baru menggunakan perintah

	sudo vim /etc/ntp.conf		sudo vim /etc/ntp.conf

	This file will be used to automatic synchronization of the clock. I do not know if the client uses this file automatically or one has to configure something first. Thanks to Sean (see comment below): You need to install ntpd in order to make use of this ntp.conf file.		Isi misalnya

	~~Whether you have the file already or not, make sure it has at least the following data~~

	driftfile /var/lib/ntp/ntp.drift		driftfile /var/lib/ntp/ntp.drift
Line 63:		Line 69:
	server pool.ntp.org		server pool.ntp.org

	~~Here you may replace, add, and/or remove any servers you wish. You will find a list of time servers from the public NTP time~~ server ~~list.~~		Untuk mensinkronkan waktu komputer dengan server yang kita inginkan dapat menggunakan perintah

	~~You may manually sync the clock using the following~~

	sudo ntpdate servername		sudo ntpdate servername

	~~where servername can be any public or private time server. You may always choose the following without hesitation~~		atau coba

	sudo ntpdate pool.ntp.org		sudo ntpdate pool.ntp.org

	~~If you don’t have ntpdate installed, you can install it via:~~

	~~sudo aptitude install ntpdate~~

	~~See, it was quite easy. Enabling NTP Services helped me gain this knowledge.~~

Onnowpurbo: /* Pranala Menarik */

2012-03-11T07:44:48Z

Pranala Menarik

← Older revision		Revision as of 07:44, 11 March 2012
Line 91:		Line 91:

	* [[Linux Howto]]		* [[Linux Howto]]
			* [[NTP]]
			* [[Linux Howto]]
			* [[Instalasi NTP]]
			* [[NTP: Port 123]]
			* [[NTP: File ntp.conf]]
			* [[NTP: Tranparant Proxy untuk NTP]]
			* [[NTP: DNS Spoofing NTP]]
			* [[NTP: Set waktu mengunakan ntpdate]]
			* [[NTP: Setup NTP Server Lokal]]
			* [[Waktu date menggunakan command line]]

Onnowpurbo: New page: Sumber: http://codeghar.wordpress.com/2007/12/06/manage-time-in-ubuntu-through-command-line/ What if you would like to manage your computer’s time in Ubuntu? It’s easy if you are in a...

2012-03-11T07:44:13Z

New page: Sumber: http://codeghar.wordpress.com/2007/12/06/manage-time-in-ubuntu-through-command-line/ What if you would like to manage your computer’s time in Ubuntu? It’s easy if you are in a...

New page

Sumber: http://codeghar.wordpress.com/2007/12/06/manage-time-in-ubuntu-through-command-line/

What if you would like to manage your computer’s time in Ubuntu? It’s easy if you are in a graphical desktop environment. But what if you are on the command line? For example, in Ubuntu Server? Well, it is easy as well. A very helpful, everything-in-one-place resource is Ubuntu Time.
View Time

To view the current date and time, the following command will be enough

date

==Set Time==

To change time means to set a new time. To set time in Ubuntu (or any Linux), just run the following command

sudo date newdatetimestring

where newdatetimestring has to follow the format nnddhhmmyyyy.ss which is described below

nn is a two digit month, between 01 to 12
dd is a two digit day, between 01 and 31, with the regular rules for days according to month and year applying
hh is two digit hour, using the 24-hour period so it is between 00 and 23
mm is two digit minute, between 00 and 59
yyyy is the year; it can be two digit or four digit: your choice. I prefer to use four digit years whenever I can for better clarity and less confusion
ss is two digit seconds. Notice the period ‘.’ before the ss.

Let’s say you want to set your computer’s new time to December 6, 2007, 22:43:55, then you would use:

sudo date 120622432007.55

It couldn’t be any easier, could it? The source of this information was a good post on Ubuntu Forums (Set time/date via command line).

==Change Time Zone==

You may update or change your time zone by

dpkg-reconfigure tzdata

This command will guide you through the process of setting a new time zone. You may also choose UTC (GMT) if you want.

If your system does not have tzdata, install it as below:

sudo aptitude install tzdata

This will provide a set of different time zones to choose. If you would like to set the time to UTC, choose the option which says something like ‘none of the above’, or ‘none of these’ or something to this effect. In my case it was option 11. Then it asks for difference from UTC (GMT and GST is also the same thing). I chose GST-0 as the option and it set the time as UTC.

==Sync Clock Via NTP==

If you want to sync your clock with NTP servers, it is also very easy. Just make sure you have the file ntp.conf file in /etc. How can you check it?

ls /etc/ntp.conf

If you see /etc/ntp.conf as a result, you already have that file. If the ls command gives an error, you do not have it. If so, you may create it yourself.

sudo vim /etc/ntp.conf

This file will be used to automatic synchronization of the clock. I do not know if the client uses this file automatically or one has to configure something first. Thanks to Sean (see comment below): You need to install ntpd in order to make use of this ntp.conf file.

Whether you have the file already or not, make sure it has at least the following data

driftfile /var/lib/ntp/ntp.drift
server 0.pool.ntp.org
server 1.pool.ntp.org
server 2.pool.ntp.org
server pool.ntp.org

Here you may replace, add, and/or remove any servers you wish. You will find a list of time servers from the public NTP time server list.

You may manually sync the clock using the following

sudo ntpdate servername

where servername can be any public or private time server. You may always choose the following without hesitation

sudo ntpdate pool.ntp.org

If you don’t have ntpdate installed, you can install it via:

sudo aptitude install ntpdate

See, it was quite easy. Enabling NTP Services helped me gain this knowledge.

==Referensi==

* http://codeghar.wordpress.com/2007/12/06/manage-time-in-ubuntu-through-command-line/
* https://help.ubuntu.com/community/UbuntuTime
* http://support.ntp.org/bin/view/Servers/WebHome - Daftar NTP Server

==Pranala Menarik==

* [[Linux Howto]]