Redhat 2007 DST Changes

bryansail · 02-23-2007, 10:39 AM

Thanks very much for your post on Linux Questions regarding RH 8.0 DST Changes for 2007. I did the commands as you stated, namely:

mkdir tz
cd tz
wget 'ftp://elsie.nci.nih.gov/pub/tz*.tar.gz'
gzip -dc tzcode*.tar.gz | tar -xf -
gzip -dc tzdata*.tar.gz | tar -xf -

But now I'm not exactly sure how to install the packages. I read the README but it wasn't clear to me. What commands would I use to perform the 2007 fix for a New York Time Zone? Please help!

Thanks in Advance,

unSpawn · 02-25-2007, 06:01 AM

But now I'm not exactly sure how to install the packages. I read the README but it wasn't clear to me.

Code:

]$  nl README | less
    29  Here is a recipe for acquiring, building, installing, and testing the
    30  tz distribution on a GNU/Linux or similar host.
    31          mkdir tz
    32          cd tz
    33          wget 'ftp://elsie.nci.nih.gov/pub/tz*.tar.gz'
    34          gzip -dc tzcode*.tar.gz | tar -xf -
    35          gzip -dc tzdata*.tar.gz | tar -xf -
    36  Be sure to read the comments in "Makefile" and make any changes needed
    37  to make things right for your system, especially if you are using some
    38  platform other than GNU/Linux.  Then run the following commands,
    39  substituting your desired installation directory for "$HOME/tzdir":
    40          make TOPDIR=$HOME/tzdir install

Code:

]$ cd /tmp && { mkdir tz && cd tz || exit 1; }
wget -q 'ftp://elsie.nci.nih.gov/pub/tz*.tar.gz' || exit 
]$ gzip -dc tzcode*.tar.gz | tar -xf -
]$ gzip -dc tzdata*.tar.gz | tar -xf -
]$ which nawk >/dev/null 2>&1|| { sed -i 's|nawk|gawk|g' Makefile || exit 1; }
]$ LOCALTIMEVAR0=`grep ^ZONE= /etc/sysconfig/clock 2>/dev/null| awk -F'=' '{print $2}'|tr -d '"'`
]$ LOCALTIMEVAR1=`make zonenames 2>/dev/null|grep -m1 $LOCALTIMEVAR0|awk '{print $1}'`
]$ [ -n $LOCALTIMEVAR1 ] || exit 1 && { sed -i "s|Factory|$LOCALTIMEVAR1|g" Makefile \
&& make install; echo 'Done!'; }

bryansail · 02-28-2007, 12:37 PM

Thanks Uspawn!

I did the commands you suggested. The first resulted in the terminal window disappearing -- strange. What can I do to ensure that the 2007 DST Rules are now in effect on this PC?

Thanks again,

-Bryan

farslayer · 02-28-2007, 12:55 PM

To check, this command will tell you if the file has been updated -

Code:

zdump -v /etc/localtime | grep 2007

This is the output if the time change-change has been made

Code:

/etc/localtime Sun Mar 11 06:59:59 2007 UTC = Sun Mar 11 01:59:59 2007 EST isdst=0 gmtoff=-18000 
/etc/localtime Sun Mar 11 07:00:00 2007 UTC = Sun Mar 11 03:00:00 2007 EDT isdst=1 gmtoff=-14400 
/etc/localtime Sun Nov 4 05:59:59 2007 UTC = Sun Nov 4 01:59:59 2007 EDT isdst=1 gmtoff=-14400 
/etc/localtime Sun Nov 4 06:00:00 2007 UTC = Sun Nov 4 01:00:00 2007 EST isdst=0 gmtoff=-18000

Thanks for this information from JimBass
http://www.linuxquestions.org/questi...d.php?t=531713

This definitely works on Debian so it may work for you as well

bryansail · 02-28-2007, 02:00 PM

WOW Farslayer! That command works on RH 8.0 OS. It was vital in determining if the the DST changes were actually made!

MANY THANKS!!!

-Bryan

rbishops · 03-03-2007, 05:09 AM

Sorry, this may seem silly. I was able to update the Makefile and compile with the information provided, however I am unsure on how to implement the changes. If I run the new zdump against the new localtime, it looks correct. However, the system is still using the original zdump and localtime even when using the -ltz during the compile. Any suggestions?

rbishops · 03-03-2007, 06:15 AM

Is this enough to complete the installation?

mv /usr/share/zoneinfo /usr/share/zoneinfo.org
mv /etc/localtime /etc/localtime.org
mv /usr/bin/tzselect /usr/bin/tzselect.org
mv /usr/sbin/zdump /usr/sbin/zdump.org
mv /usr/sbin/zic /usr/sbin/zic.org

ln -s $tzdir/etc/zoneinfo /usr/share/zoneinfo
ln -s $tzdir/etc/zoneinfo/localtime /etc/localtime
ln -s $tzdir/etc/tzselect /usr/bin/tzselect
ln -s $tzdir/etc/zdump /usr/sbin/zdump
ln -s $tzdir/etc/zic /usr/sbin/zic

farslayer · 03-03-2007, 11:27 PM

What distros are you all running that there wasn't a simple update available ?

I'm just kind of curious since all I did with Debian was the standard update process and all of my Debian machines are ready for the new DST changes..

I would have thought that all the major distros would have updates available, and any child distros of them would get the update through the trickle down effect..

rbishops · 03-06-2007, 07:15 AM

I've got a few machines running some older distros; RedHat 6.2 on Sparc and RedHat 7.2 for i386. My newer RedHat and SUSE distros were done through the standard update process. After some testing all appear to be working well now.

bryansail · 03-08-2007, 06:02 AM

In the end, some great guys gave me these simple commands to update the 2007 DST Rules on Redhat Linux 8.0:

url=http://bent.latency.net/bent/i386/zoneinfo-2007b.cpio.bz2
cd /
wget -q -O - $url|bzip2 -d|cpio -idum

This was much simpler than the process as given in the 2/23 & 2/25 posts.

Then just run:

zdump -v /etc/localtime | grep 2007

And the output should be:

/etc/localtime Sun Mar 11 06:59:59 2007 UTC = Sun Mar 11 01:59:59 2007 EST isdst=0 gmtoff=-18000
/etc/localtime Sun Mar 11 07:00:00 2007 UTC = Sun Mar 11 03:00:00 2007 EDT isdst=1 gmtoff=-14400
/etc/localtime Sun Nov 4 05:59:59 2007 UTC = Sun Nov 4 01:59:59 2007 EDT isdst=1 gmtoff=-14400
/etc/localtime Sun Nov 4 06:00:00 2007 UTC = Sun Nov 4 01:00:00 2007 EST isdst=0 gmtoff=-18000

Thanks to all!!

sneader · 03-11-2007, 10:45 AM

Quote:

/bent/i386/zoneinfo-2007b.cpio.bz2

I see the file name has changed to zoneinfo-2007c.cpio.bz2

Still when I run the zdump command, I'm still showing the old dates. This is with Shrike. Any other suggestions?

- Scott