fetch timezone in bash script - comp.os.linux.misc

I am writing a bash script which needs my time zone location like "America/Chicago" . Is there a command I can use to fetch timezone location. google has worn my eyes out. Did find assembly and c code but is a bit much.

Bit Twister wrote: > > I am writing a bash script which needs my time zone location like > "America/Chicago" . > > Is there a command I can use to fetch timezone location. > > google has worn my eyes out. Did find assembly and c code but > is a bit much. $ cat /etc/timezone Europe/London This is on Ubuntu.

Bit Twister <BitTwister@mouse-potato.com> writes: >I am writing a bash script which needs my time zone location like >"America/Chicago" . >Is there a command I can use to fetch timezone location. No. If the system is set up properly, /etc/localtime is a copy, not a link (since a link would probably be broken on bootup before /usr is mounted). However, you can probably to do date which will tell you in short form (eg PDT). On the other hand that could well be ambiguous. Perhaps you should tell us why you need that, rather than say the displacement from UTC which is also easy to get. date -R, the 6th field gives the displacement from UTC. Your particular distribution might have the information in say /etc/sysconfig/clock (ZONE=) or in an environment variable >google has worn my eyes out. Did find assembly and c code but >is a bit much.

On Sun, 25 Oct 2009 00:37:01 GMT, Unruh wrote: > Perhaps you should tell us why you need that, I did tell you. :) Details: I am writing an automated install script $ wc -l install_vtiger 1195 install_vtiger for the vtigercrm (http://vtiger.com/) package on Mandriva Linux 2010.0 I need to modify application's php script to set zone. > Your particular distribution might have the information in say > /etc/sysconfig/clock > (ZONE=) or in an environment variable We have a winner. Thank you very much. Proof: . /etc/sysconfig/clock echo $ZONE

On Sun, 25 Oct 2009 01:36:57 +0100, pk wrote: > Bit Twister wrote: > >> >> I am writing a bash script which needs my time zone location like >> "America/Chicago" . >> >> Is there a command I can use to fetch timezone location. >> >> google has worn my eyes out. Did find assembly and c code but >> is a bit much. > > $ cat /etc/timezone > Europe/London > > This is on Ubuntu. On Mandriva Linux $ cat /etc/timezone cat: /etc/timezone: No such file or directory $ cat /etc/sysconfig/clock UTC=true ARC=false ZONE=America/Chicago

John Hasler <jhasler@newsguy.com> writes: >"cat /etc/timezone" for the "system" timezone. Does not exist in Mandriva. Ie, this is a very distro dependent solution. >$TZ for the user's timezone (if set).

On Sun, 25 Oct 2009, in the Usenet newsgroup comp.os.linux.misc, in article <slrnhe79ql.k8f.BitTwister@wcooker.home.test>, Bit Twister wrote: >Unruh wrote: >> Your particular distribution might have the information in say >> /etc/sysconfig/clock >> (ZONE=) or in an environment variable > >We have a winner. Thank you very much. and again, we may not - there is no standard. See http://www.pathname.com/fhs/ The Linux Standard Base (http://www.linuxbase.org/spec/) does define a pair of C variables __timezone -- global variable containing timezone __tzname -- global variable containing the timezone but that's about it for standarization. >Proof: > . /etc/sysconfig/clock > echo $ZONE Doesn't work on non-RedHat derived systems, as already demonstrated by others. Old guy

On Sun, 25 Oct 2009 11:09:44 -0500, Moe Trin wrote: > On Sun, 25 Oct 2009, Bit Twister wrote: >>Unruh wrote: > >>> Your particular distribution might have the information in say >>> /etc/sysconfig/clock >>> (ZONE=) or in an environment variable >> >>We have a winner. Thank you very much. > > and again, we may not - there is no standard. See > http://www.pathname.com/fhs/ Furthermore, any process may set its own TZ value and all sub-processes will run thus. So, peeking in any system file may yield wrong results. Jonesy -- Marvin L Jones | jonz | W3DHJ | linux 38.24N 104.55W | @ config.com | Jonesy | OS/2 * Killfiling google & XXXXbanter.com: jonz.net/ng.htm

On Sun, 25 Oct 2009 11:09:44 -0500, ibuprofin@painkiller.example.tld (Moe Trin) wrote: >On Sun, 25 Oct 2009, in the Usenet newsgroup comp.os.linux.misc, in article ><slrnhe79ql.k8f.BitTwister@wcooker.home.test>, Bit Twister wrote: > >>Unruh wrote: > >>> Your particular distribution might have the information in say >>> /etc/sysconfig/clock >>> (ZONE=) or in an environment variable >> >>We have a winner. Thank you very much. > >and again, we may not - there is no standard. See >http://www.pathname.com/fhs/ > >The Linux Standard Base (http://www.linuxbase.org/spec/) does define >a pair of C variables > > __timezone -- global variable containing timezone > > __tzname -- global variable containing the timezone > > >but that's about it for standarization. > >>Proof: >> . /etc/sysconfig/clock >> echo $ZONE > >Doesn't work on non-RedHat derived systems, as already demonstrated by >others. I forget rest of this thread, what's wrong with: ~$ date "+%z %Z" +1100 EST ~$ date -u "+%z %Z" +0000 UTC Grant. -- http://bugsplatter.id.au

Grant <g_r_a_n_t_@bugsplatter.id.au> writes: >On Sun, 25 Oct 2009 11:09:44 -0500, ibuprofin@painkiller.example.tld (Moe Trin) wrote: >>On Sun, 25 Oct 2009, in the Usenet newsgroup comp.os.linux.misc, in article >><slrnhe79ql.k8f.BitTwister@wcooker.home.test>, Bit Twister wrote: >> >>>Unruh wrote: >> >>>> Your particular distribution might have the information in say >>>> /etc/sysconfig/clock >>>> (ZONE=) or in an environment variable >>> >>>We have a winner. Thank you very much. >> >>and again, we may not - there is no standard. See >>http://www.pathname.com/fhs/ >> >>The Linux Standard Base (http://www.linuxbase.org/spec/) does define >>a pair of C variables >> >> __timezone -- global variable containing timezone >> >> __tzname -- global variable containing the timezone >> >> >>but that's about it for standarization. >> >>>Proof: >>> . /etc/sysconfig/clock >>> echo $ZONE >> >>Doesn't work on non-RedHat derived systems, as already demonstrated by >>others. >I forget rest of this thread, what's wrong with: >~$ date "+%z %Z" >+1100 EST >~$ date -u "+%z %Z" >+0000 UTC He said he wanted a name (America/Chicago). Whether that was actually true I do not know.

On Mon, 26 Oct 2009 03:50:10 +1100, Grant wrote: > I forget rest of this thread, what's wrong with: > > ~$ date "+%z %Z" > +1100 EST Because I needed something like America/Chicago so I could automagically modify /var/www/html/vtigercrm/config.inc.php, to contain. // Set the default timezone as per your preference $default_timezone = 'America/Chicago'; Why, you ask, to clear this problem: Warning: date() [function.date]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'America/Chicago' for 'CDT/-5.0/DST' instead in /var/www/html/vtigercrm/config.inc.php

On Sun, 25 Oct 2009 17:25:27 +0000 (UTC), Bit Twister <BitTwister@mouse-potato.com> wrote: >On Mon, 26 Oct 2009 03:50:10 +1100, Grant wrote: > >> I forget rest of this thread, what's wrong with: >> >> ~$ date "+%z %Z" >> +1100 EST > >Because I needed something like America/Chicago so I could >automagically modify /var/www/html/vtigercrm/config.inc.php, >to contain. > >// Set the default timezone as per your preference >$default_timezone = 'America/Chicago'; > >Why, you ask, to clear this problem: > >Warning: date() [function.date]: It is not safe to rely on the >system's timezone settings. You are *required* to use the >date.timezone setting or the date_default_timezone_set() function. In >case you used any of those methods and you are still getting this >warning, you most likely misspelled the timezone identifier. We >selected 'America/Chicago' for 'CDT/-5.0/DST' instead in >/var/www/html/vtigercrm/config.inc.php Okay, I dug around in a fresh slack-13.0 install, the master zone information lives in /usr/share/zoneinfo/zone.tab and your Chicago entry looks like: US +415100-0873900 America/Chicago Central Time Fields are iso country code, latitude and logitude, zone name, comment. The file header gives details, you could read this file and calculate the equivalent timezone offset --> zone name? Or lookup a zone name to make sure it's in the list. Grant. -- http://bugsplatter.id.au

On Mon, 26 Oct 2009, in the Usenet newsgroup comp.os.linux.misc, in article <otg9e5hcf6vqhdjhigi748sk89cpqd05ir@4ax.com>, Grant wrote: >Bit Twister <BitTwister@mouse-potato.com> wrote: >> Grant wrote: >>> I forget rest of this thread, what's wrong with: >>> >>> ~$ date "+%z %Z" >>> +1100 EST >>Because I needed something like America/Chicago so I could >>automagically modify /var/www/html/vtigercrm/config.inc.php, >>to contain. >> >>// Set the default timezone as per your preference >>$default_timezone = 'America/Chicago'; >Okay, I dug around in a fresh slack-13.0 install, the master zone >information lives in > > /usr/share/zoneinfo/zone.tab > >and your Chicago entry looks like: > > US +415100-0873900 America/Chicago Central Time He needs the defined name, and doesn't have any other source. The problem is shown as follows [compton ~]$ grep America/Chicago time.2009o/Time.zone.names America/Chicago USA US y -6:00 CST/CDT [compton ~]$ grep -c USA time.2009o/Time.zone.names 37 [compton ~]$ awk '{ print $5 }' time.2009o/Time.zone.names | sort -n | uniq -c | column 4 -11:00 26 -3:00 1 4:30 3 9:30 7 -10:00 1 -3:30 11 5:00 13 10:00 5 -9:00 2 -2:00 2 5:30 1 10:30 1 -9:30 3 -1:00 1 5:45 6 11:00 7 -8:00 28 0:00 10 6:00 1 11:30 14 -7:00 48 1:00 2 6:30 13 12:00 24 -6:00 38 2:00 10 7:00 1 12:45 32 -5:00 20 3:00 18 8:00 2 13:00 38 -4:00 1 3:30 1 8:45 1 14:00 1 -4:30 9 4:00 8 9:00 [compton ~]$ wc -l time.2009o/Time.zone.names 414 time.2009o/Time.zone.names [compton ~]$ So there really isn't a substitute for having the real zone name. The 24 -06:00 zones are in eleven countries from Canada to Chile. At the same time, there are 37 timezone _names_ in the US alone (and 13 in Oz). The whole mess is just as standardized as the operating systems. Old guy

Similiar Articles:

Could anyone show me a program to count the running time of ...
That means: go fetch the sources of the time command of linux or FreeBSD or Darwin or whatever. ... Bash script - telnet - comp.unix.shell Could anyone show me a program to ...

Mysterious file descriptor behavior - comp.unix.programmer ...
On Redhat, I got: -bash-3.00$ ls -l /proc/$$/fd total 4 ... in using, and you're only logged in to one at a time ... behavior; Mysterious CPU consumption; mysql_fetch_row ...

Bash (Unix shell) - Wikipedia, the free encyclopedia
The vast majority of Bourne shell scripts can be executed by Bash without ... standard error (stderr) at the same time using ... the found command from history, and fetch the ...

How to fetch NYSE prices with simple bash script
NYSE stock exchange download script #!/bin/bash temp=`mktemp ... we call 40 instances of wget at any given time. ... data from eoddata.com simply modify your script to fetch ...

7/23/2012 2:10:35 PM