Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: Convert UTC time into current UNIX sever time zone
Top Forums Shell Programming and Scripting Convert UTC time into current UNIX sever time zone Post 302879315 by Don Cragun on Wednesday 11th of December 2013 07:19:09 PM
Old 12-11-2013
Quote:
Originally Posted by blackrageous
This does seem to be a bit vague. Here is a useful tip and in this case I am using the korn shell. The idea here is to temporarily define the TZ environment variable; that is....
Code:
TZ=CDT date

would define the TZ var for the execution of the date command...regardless of what the default TZ setting is.

By example...
Code:
[josephgr@oc0887178221 ~]$ date; TZ=UTC date
Wed Dec 11 17:57:03 CST 2013
Wed Dec 11 23:57:03 UTC 2013

This isn't a ksh feature, it is standard behavior required for any shell conforming to the POSIX standards or the Single UNIX Specifications. But, the format shown above is not correct. A valid setting for TZ will include at least the zone's name and offset from UTC. The normal setting for Texas in the United States would be TZ=CST6CDT (not TZ=CDT) and TZ=UTC happens to work because the offset from UTC to UTC is 0, but the output from the commands:
Code:
TZ=CDT date
TZ=UTC date

will be identical except for the difference in the time zone name. Compare the results above with:
Code:
TZ=CST6CDT date

where you'll see a 6 hour difference in time (this time of year) as well as a difference in the time zone name. The output from the above three commands should be something like:
Code:
Thu Dec 12 00:17:50 UTC 2013
Thu Dec 12 00:17:50 UTC 2013
Wed Dec 11 18:17:50 CST 2013

Last edited by Don Cragun; 12-11-2013 at 08:20 PM.. Reason: Fix typo.
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Convert Unix Time to Standard Time

I have a list of interfaces and time the interface was last active. I can't figure out how to convert the time in the second column, Fa1/14 0 Se0/0/0 0 Fa1/11 0 Fa1/9 0 Fa1/0 0 Se0/0/1 1240401408 Gi1/0 0 Fa0/0 1240401408 Fa1/3 0 Fa1/8 0 Fa1/15 0 Fa1/13 0 Fa1/10 0 Fa1/1 0 Fa1/12... (7 Replies)
Discussion started by: mrlayance
7 Replies

2. Shell Programming and Scripting

Convert UTC time to Date

Hi, I need to convert a number representing time in UTC seconds to a date. Ex: 3BE0082C --> Oct 31 2001 15:31:08 I have tried the following perl command but it gives a different answer? $ perl -e 'print scalar localtime(shift), "\n"' 3BE00B2C Thu Jan 1 03:00:03 1970 Any ideas? Thanks. :) (10 Replies)
Discussion started by: GNMIKE
10 Replies

3. AIX

Convert UTC time to local time ?

Hello, Using AIX6.1 box. I have UTC time value and need to convert it to local time value - I mean time zone and DST should be taken into consideration. I hope it could be done using shell environment - I don't want to write a program. thanks Vilius ---------- Post updated at 02:30 PM... (2 Replies)
Discussion started by: vilius
2 Replies

4. Shell Programming and Scripting

Find and Convert UTC Time to PST Time

Hello All - I have a script that grabs data from the net and outputs the following data 46029 46.144 -124.510 2010 07 26 22 50 320 4.0 6.0 2.2 9 6.8 311 1012.1 -0.9 13.3 13.5 13.3 - - 46041 47.353 -124.731 2010 07 26 22 50 250 2.0 3.0 1.6 8 6.4 - 1011.6 - ... (0 Replies)
Discussion started by: drexnefex
0 Replies

5. AIX

Convert time (YYYYMMDD HHMMSS) to UTC

Okay, so let's say we have a string like: 20110105_193345 This represents: January 5th, 2011 = 20110105 24-hour style time 19:33:45 = 193345 Okay, so we have our time. It's January 5th, 2011 at 19:33:45. I want to convert this time from Eastern Time Zone (which it currently is in)... (1 Reply)
Discussion started by: syndex
1 Replies

6. UNIX for Dummies Questions & Answers

UTC time and Local time

Hi, A few days ago I changed my CentOS box's timezone to -07:00. Now the date commands output look like this (run almost simultaneously, less than 1 second delay).. # date Mon Sep 5 20:23:40 PDT 2011 # date -u Tue Sep 6 03:24:05 UTC 2011 The hours difference seems correct, but why is... (2 Replies)
Discussion started by: forte712
2 Replies

7. Solaris

modifying date and time and time zone on solaris 5.10 with (redundant server) veritas

I have a cluster of two Solaris server (veritas cluster). one working and the other is standby I am going to change the date on them , and am looking for a secure solution as it is giving an important service. my opinion is that the active one doesn't need to be restarted (if I don't change the... (1 Reply)
Discussion started by: barry1946
1 Replies

8. Shell Programming and Scripting

Displaying current date time of EDT in IST time

Hi Folks, My server time is in EDT. And i am sending automated mails from that server in which i need to display the current date time as per IST (GMT+5:30). Please advice how to display the date time as per IST. IST time leads 9:30 mins to EDT. and i wrote something like below. ... (6 Replies)
Discussion started by: Showdown
6 Replies

9. AIX

Change Time Zone to UTC without DST

Hello AIX friends, We have timezone settings on our AIX 6.1 boxes set to Europe/London. How can I change it to UTC timezone with Daylight saving disabled. After running "smit chtz_user" I don't see UTC option in the listing. Please advise. TIA (3 Replies)
Discussion started by: prvnrk
3 Replies

10. UNIX for Dummies Questions & Answers

How to change the time zone in UNIX??

hi, my system date and time zone is PDT. whenever i append date time stamp to a file it appends the system date thats PDT date time zone. i want to append GMT time zone. is there a mechanism or option which can append the date time stamp according to GMT. (4 Replies)
Discussion started by: Little
4 Replies

LEARN ABOUT OSX

datetime::locale::en_us_posix

DateTime::Locale::en_US_POSIX(3)			User Contributed Perl Documentation			  DateTime::Locale::en_US_POSIX(3)

NAME

       DateTime::Locale::en_US_POSIX

SYNOPSIS

	 use DateTime;

	 my $dt = DateTime->now( locale => 'en_US_POSIX' );
	 print $dt->month_name();

DESCRIPTION

       This is the DateTime locale package for English United States Computer.

DATA

       This locale inherits from the DateTime::Locale::en_US locale.

       It contains the following data.

   Days
       Wide (format)

	 Monday
	 Tuesday
	 Wednesday
	 Thursday
	 Friday
	 Saturday
	 Sunday

       Abbreviated (format)

	 Mon
	 Tue
	 Wed
	 Thu
	 Fri
	 Sat
	 Sun

       Narrow (format)

	 M
	 T
	 W
	 T
	 F
	 S
	 S

       Wide (stand-alone)

	 Monday
	 Tuesday
	 Wednesday
	 Thursday
	 Friday
	 Saturday
	 Sunday

       Abbreviated (stand-alone)

	 Mon
	 Tue
	 Wed
	 Thu
	 Fri
	 Sat
	 Sun

       Narrow (stand-alone)

	 M
	 T
	 W
	 T
	 F
	 S
	 S

   Months
       Wide (format)

	 January
	 February
	 March
	 April
	 May
	 June
	 July
	 August
	 September
	 October
	 November
	 December

       Abbreviated (format)

	 Jan
	 Feb
	 Mar
	 Apr
	 May
	 Jun
	 Jul
	 Aug
	 Sep
	 Oct
	 Nov
	 Dec

       Narrow (format)

	 J
	 F
	 M
	 A
	 M
	 J
	 J
	 A
	 S
	 O
	 N
	 D

       Wide (stand-alone)

	 January
	 February
	 March
	 April
	 May
	 June
	 July
	 August
	 September
	 October
	 November
	 December

       Abbreviated (stand-alone)

	 Jan
	 Feb
	 Mar
	 Apr
	 May
	 Jun
	 Jul
	 Aug
	 Sep
	 Oct
	 Nov
	 Dec

       Narrow (stand-alone)

	 J
	 F
	 M
	 A
	 M
	 J
	 J
	 A
	 S
	 O
	 N
	 D

   Quarters
       Wide (format)

	 1st quarter
	 2nd quarter
	 3rd quarter
	 4th quarter

       Abbreviated (format)

	 Q1
	 Q2
	 Q3
	 Q4

       Narrow (format)

	 1
	 2
	 3
	 4

       Wide (stand-alone)

	 1st quarter
	 2nd quarter
	 3rd quarter
	 4th quarter

       Abbreviated (stand-alone)

	 Q1
	 Q2
	 Q3
	 Q4

       Narrow (stand-alone)

	 1
	 2
	 3
	 4

   Eras
       Wide

	 Before Christ
	 Anno Domini

       Abbreviated

	 BC
	 AD

       Narrow

	 B
	 A

   Date Formats
       Full

	  2008-02-05T18:30:30 = Tuesday, February 5, 2008
	  1995-12-22T09:05:02 = Friday, December 22, 1995
	 -0010-09-15T04:44:23 = Saturday, September 15, -10

       Long

	  2008-02-05T18:30:30 = February 5, 2008
	  1995-12-22T09:05:02 = December 22, 1995
	 -0010-09-15T04:44:23 = September 15, -10

       Medium

	  2008-02-05T18:30:30 = Feb 5, 2008
	  1995-12-22T09:05:02 = Dec 22, 1995
	 -0010-09-15T04:44:23 = Sep 15, -10

       Short

	  2008-02-05T18:30:30 = 2/5/08
	  1995-12-22T09:05:02 = 12/22/95
	 -0010-09-15T04:44:23 = 9/15/-10

       Default

	  2008-02-05T18:30:30 = Feb 5, 2008
	  1995-12-22T09:05:02 = Dec 22, 1995
	 -0010-09-15T04:44:23 = Sep 15, -10

   Time Formats
       Full

	  2008-02-05T18:30:30 = 6:30:30 PM UTC
	  1995-12-22T09:05:02 = 9:05:02 AM UTC
	 -0010-09-15T04:44:23 = 4:44:23 AM UTC

       Long

	  2008-02-05T18:30:30 = 6:30:30 PM UTC
	  1995-12-22T09:05:02 = 9:05:02 AM UTC
	 -0010-09-15T04:44:23 = 4:44:23 AM UTC

       Medium

	  2008-02-05T18:30:30 = 6:30:30 PM
	  1995-12-22T09:05:02 = 9:05:02 AM
	 -0010-09-15T04:44:23 = 4:44:23 AM

       Short

	  2008-02-05T18:30:30 = 6:30 PM
	  1995-12-22T09:05:02 = 9:05 AM
	 -0010-09-15T04:44:23 = 4:44 AM

       Default

	  2008-02-05T18:30:30 = 6:30:30 PM
	  1995-12-22T09:05:02 = 9:05:02 AM
	 -0010-09-15T04:44:23 = 4:44:23 AM

   Datetime Formats
       Full

	  2008-02-05T18:30:30 = Tuesday, February 5, 2008 6:30:30 PM UTC
	  1995-12-22T09:05:02 = Friday, December 22, 1995 9:05:02 AM UTC
	 -0010-09-15T04:44:23 = Saturday, September 15, -10 4:44:23 AM UTC

       Long

	  2008-02-05T18:30:30 = February 5, 2008 6:30:30 PM UTC
	  1995-12-22T09:05:02 = December 22, 1995 9:05:02 AM UTC
	 -0010-09-15T04:44:23 = September 15, -10 4:44:23 AM UTC

       Medium

	  2008-02-05T18:30:30 = Feb 5, 2008 6:30:30 PM
	  1995-12-22T09:05:02 = Dec 22, 1995 9:05:02 AM
	 -0010-09-15T04:44:23 = Sep 15, -10 4:44:23 AM

       Short

	  2008-02-05T18:30:30 = 2/5/08 6:30 PM
	  1995-12-22T09:05:02 = 12/22/95 9:05 AM
	 -0010-09-15T04:44:23 = 9/15/-10 4:44 AM

       Default

	  2008-02-05T18:30:30 = Feb 5, 2008 6:30:30 PM
	  1995-12-22T09:05:02 = Dec 22, 1995 9:05:02 AM
	 -0010-09-15T04:44:23 = Sep 15, -10 4:44:23 AM

   Available Formats
       d (d)

	  2008-02-05T18:30:30 = 5
	  1995-12-22T09:05:02 = 22
	 -0010-09-15T04:44:23 = 15

       EEEd (d EEE)

	  2008-02-05T18:30:30 = 5 Tue
	  1995-12-22T09:05:02 = 22 Fri
	 -0010-09-15T04:44:23 = 15 Sat

       Hm (H:mm)

	  2008-02-05T18:30:30 = 18:30
	  1995-12-22T09:05:02 = 9:05
	 -0010-09-15T04:44:23 = 4:44

       hm (h:mm a)

	  2008-02-05T18:30:30 = 6:30 PM
	  1995-12-22T09:05:02 = 9:05 AM
	 -0010-09-15T04:44:23 = 4:44 AM

       Hms (H:mm:ss)

	  2008-02-05T18:30:30 = 18:30:30
	  1995-12-22T09:05:02 = 9:05:02
	 -0010-09-15T04:44:23 = 4:44:23

       hms (h:mm:ss a)

	  2008-02-05T18:30:30 = 6:30:30 PM
	  1995-12-22T09:05:02 = 9:05:02 AM
	 -0010-09-15T04:44:23 = 4:44:23 AM

       M (L)

	  2008-02-05T18:30:30 = 2
	  1995-12-22T09:05:02 = 12
	 -0010-09-15T04:44:23 = 9

       Md (M/d)

	  2008-02-05T18:30:30 = 2/5
	  1995-12-22T09:05:02 = 12/22
	 -0010-09-15T04:44:23 = 9/15

       MEd (E, M/d)

	  2008-02-05T18:30:30 = Tue, 2/5
	  1995-12-22T09:05:02 = Fri, 12/22
	 -0010-09-15T04:44:23 = Sat, 9/15

       MMM (LLL)

	  2008-02-05T18:30:30 = Feb
	  1995-12-22T09:05:02 = Dec
	 -0010-09-15T04:44:23 = Sep

       MMMd (MMM d)

	  2008-02-05T18:30:30 = Feb 5
	  1995-12-22T09:05:02 = Dec 22
	 -0010-09-15T04:44:23 = Sep 15

       MMMEd (E, MMM d)

	  2008-02-05T18:30:30 = Tue, Feb 5
	  1995-12-22T09:05:02 = Fri, Dec 22
	 -0010-09-15T04:44:23 = Sat, Sep 15

       MMMMd (MMMM d)

	  2008-02-05T18:30:30 = February 5
	  1995-12-22T09:05:02 = December 22
	 -0010-09-15T04:44:23 = September 15

       MMMMEd (E, MMMM d)

	  2008-02-05T18:30:30 = Tue, February 5
	  1995-12-22T09:05:02 = Fri, December 22
	 -0010-09-15T04:44:23 = Sat, September 15

       ms (mm:ss)

	  2008-02-05T18:30:30 = 30:30
	  1995-12-22T09:05:02 = 05:02
	 -0010-09-15T04:44:23 = 44:23

       y (y)

	  2008-02-05T18:30:30 = 2008
	  1995-12-22T09:05:02 = 1995
	 -0010-09-15T04:44:23 = -10

       yM (M/yyyy)

	  2008-02-05T18:30:30 = 2/2008
	  1995-12-22T09:05:02 = 12/1995
	 -0010-09-15T04:44:23 = 9/-010

       yMEd (EEE, M/d/yyyy)

	  2008-02-05T18:30:30 = Tue, 2/5/2008
	  1995-12-22T09:05:02 = Fri, 12/22/1995
	 -0010-09-15T04:44:23 = Sat, 9/15/-010

       yMMM (MMM y)

	  2008-02-05T18:30:30 = Feb 2008
	  1995-12-22T09:05:02 = Dec 1995
	 -0010-09-15T04:44:23 = Sep -10

       yMMMEd (EEE, MMM d, y)

	  2008-02-05T18:30:30 = Tue, Feb 5, 2008
	  1995-12-22T09:05:02 = Fri, Dec 22, 1995
	 -0010-09-15T04:44:23 = Sat, Sep 15, -10

       yMMMM (MMMM y)

	  2008-02-05T18:30:30 = February 2008
	  1995-12-22T09:05:02 = December 1995
	 -0010-09-15T04:44:23 = September -10

       yQ (Q yyyy)

	  2008-02-05T18:30:30 = 1 2008
	  1995-12-22T09:05:02 = 4 1995
	 -0010-09-15T04:44:23 = 3 -010

       yQQQ (QQQ y)

	  2008-02-05T18:30:30 = Q1 2008
	  1995-12-22T09:05:02 = Q4 1995
	 -0010-09-15T04:44:23 = Q3 -10

   Miscellaneous
       Prefers 24 hour time?

       No

       Local first day of the week

       Sunday

SUPPORT

       See DateTime::Locale.

AUTHOR

       Dave Rolsky <autarch@urth.org>

COPYRIGHT

       Copyright (c) 2008 David Rolsky. All rights reserved. This program is free software; you can redistribute it and/or modify it under the
       same terms as Perl itself.

       This module was generated from data provided by the CLDR project, see the LICENSE.cldr in this distribution for details on the CLDR data's
       license.

perl v5.16.2							    2013-08-25					  DateTime::Locale::en_US_POSIX(3)
All times are GMT -4. The time now is 09:40 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy