Update timezone files for earlier Daylight Savings Time - Revision history

Christoph at 01:44, 14 May 2015

2015-05-14T01:44:20Z

Christoph: /* timedatectl */

2014-11-13T12:06:06Z

‎timedatectl

Christoph at 11:33, 13 November 2014

2014-11-13T11:33:15Z

Christoph at 11:32, 13 November 2014

2014-11-13T11:32:09Z

Christoph at 01:23, 8 November 2010

2010-11-08T01:23:17Z

Christoph at 01:22, 8 November 2010

2010-11-08T01:22:34Z

Christoph: /* Sync localtime with rdate */

2010-11-08T01:20:39Z

‎Sync localtime with rdate

Christoph at 01:18, 8 November 2010

2010-11-08T01:18:56Z

Christoph at 01:17, 8 November 2010

2010-11-08T01:17:06Z

Christoph at 11:48, 7 November 2010

2010-11-07T11:48:46Z

@@ Line 57: / Line 57: @@
 ==timedatectl==
-''Note: Most of these commands will need to be run as either root or sudo and is only valid for systems using systemd.''
+''Note: Most of these commands will need to be run as either root or sudo and is only valid for systems using [[systemd]].''
 * List all available timezones on your computer/server:
@@ Line 70: / Line 70: @@
 Your system will be updated to use the selected timezone. You can verify with:
   $ timedatectl
 ==References==

@@ Line 57: / Line 57: @@
 ==timedatectl==
-''Note: Most of these commands will need to be run as either root or sudo.''
+''Note: Most of these commands will need to be run as either root or sudo and is only valid for systems using systemd.''
 * List all available timezones on your computer/server:

@@ Line 5: / Line 5: @@
 *Step 1: Check that you are using the older DST definition.
 To determine if your time zone has an issue, run this command (note that <code>zdump</code> might be located under <code>/sbin/zdump</code> or <code>/usr/sbin/zdump</code>):
-  % zdump -v /etc/localtime | grep 2007
+  $ zdump -v /etc/localtime | grep 2007
 For an example, if you are living in the "Pacific" time zone, you should get something like the following:
@@ Line 20: / Line 20: @@
   /usr/share/zoneinfo/
 and they are usually linked to the <code>/etc/localtime</code>
-  % ls -lah /etc/localtime
+  $ ls -lah /etc/localtime
     lrw-r--r--  1 root root 1.1K Jan  5  2006 /etc/localtime ->
     /usr/share/zoneinfo/America/Vancouver
 *Step 2: Download the [ftp://elsie.nci.nih.gov/pub/ patch from here]. You will need the file <code>tzdata2007c.tar.gz</code> (this may have changed since writing this). Then execute the following commands under the appropriate directory (they are usually located under <code>/usr/share/zoneinfo</code>):
-  % wget '<nowiki>ftp://elsie.nci.nih.gov/pub/tz*.tar.gz</nowiki>'
+  $ wget '<nowiki>ftp://elsie.nci.nih.gov/pub/tz*.tar.gz</nowiki>'
-  % gzip -dc tzcode*.tar.gz | tar -xf -
+  $ gzip -dc tzcode*.tar.gz | tar -xf -
-  % gzip -dc tzdata*.tar.gz | tar -xf -
+  $ gzip -dc tzdata*.tar.gz | tar -xf -
 *Step 3: Since, in our example, we are interested in the files related to the "Pacific" timezone, we will only need "<code>northamerica</code>" and/or "<code>pacificnew</code>". (note: Some modifications where made to the <code>europe</code> and <code>africa</code> files as well, and the last command, <code>zic backwards</code>, will complain if you do not include them.) Here are the commands to run (as root):
-  % cd /path/to/tzdata2007c
+  $ cd /path/to/tzdata2007c
-  % zic europe
+  $ zic europe
-  % zic africa
+  $ zic africa
-  % zic northamerica
+  $ zic northamerica
-  % zic backwards
+  $ zic backwards
 Et voilà! Now, check your results with the original command again:
-  zdump -v /etc/localtime | grep 2007
+  $ zdump -v /etc/localtime | grep 2007
 and you should see something like this:
 <pre>
@@ Line 54: / Line 54: @@
 Remember to make this file executable, like so:
-  % chmod 775 /etc/cron.hourly/time-sync
+  $ chmod 775 /etc/cron.hourly/time-sync
 ==timedatectl==

@@ Line 29: / Line 29: @@
   % gzip -dc tzdata*.tar.gz | tar -xf -
-*Step 3: Since, in our example, we are interested in the files related to the "Pacific" timezone, we will only need "<code>northamerica</code>" and/or "<code>pacificnew</code>". (note: Some modifications where made to the <code>europe</code> and <code>africa</code> files as well, and the last command, <code>zic backwards</code>, will complain if you don't include them.) Here are the commands to run (as root):
+*Step 3: Since, in our example, we are interested in the files related to the "Pacific" timezone, we will only need "<code>northamerica</code>" and/or "<code>pacificnew</code>". (note: Some modifications where made to the <code>europe</code> and <code>africa</code> files as well, and the last command, <code>zic backwards</code>, will complain if you do not include them.) Here are the commands to run (as root):
   % cd /path/to/tzdata2007c
@@ Line 55: / Line 55: @@
 Remember to make this file executable, like so:
   % chmod 775 /etc/cron.hourly/time-sync
 ==References==

@@ Line 17: / Line 17: @@
 Notice that those dates do not correspond to the second Sunday in March nor the first Sunday in November. If you see this in the output, then your DST will not start (or end) on the correct day.
-The time zone files are using found here:
+The time zone files are usually found here:
   /usr/share/zoneinfo/
 and they are usually linked to the <code>/etc/localtime</code>

@@ Line 25: / Line 25: @@
 *Step 2: Download the [ftp://elsie.nci.nih.gov/pub/ patch from here]. You will need the file <code>tzdata2007c.tar.gz</code> (this may have changed since writing this). Then execute the following commands under the appropriate directory (they are usually located under <code>/usr/share/zoneinfo</code>):
-  % wget 'ftp://elsie.nci.nih.gov/pub/tz*.tar.gz'
+  % wget '<nowiki>ftp://elsie.nci.nih.gov/pub/tz*.tar.gz</nowiki>'
   % gzip -dc tzcode*.tar.gz | tar -xf -
   % gzip -dc tzdata*.tar.gz | tar -xf -
@@ Line 64: / Line 64: @@
 *[http://www.twinsun.com/tz/tz-link.htm Sources for Time Zone and Daylight Saving Time Data]
 [[Category:Linux Command Line Tools]]

@@ Line 24: / Line 24: @@
     /usr/share/zoneinfo/America/Vancouver
-*Step 2: Download the [ftp://elsie.nci.nih.gov/pub/ patch from here]. You will need the file <code>tzdata2007c.tar.gz</code> (this may have changed since writing this).
+*Step 2: Download the [ftp://elsie.nci.nih.gov/pub/ patch from here]. You will need the file <code>tzdata2007c.tar.gz</code> (this may have changed since writing this). Then execute the following commands under the appropriate directory (they are usually located under <code>/usr/share/zoneinfo</code>):
 *Step 3: Extract the contents of the archive to a local folder.
@@ Line 57: / Line 60: @@
 *[[zdump]] &mdash; time zone dumper
 *[[zic]] &mdash; time zone compiler
 [[Category:Linux Command Line Tools]]