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Full Discussion: Timezone in +/-HHMM format
Top Forums Shell Programming and Scripting Timezone in +/-HHMM format Post 302164367 by jim mcnamara on Monday 4th of February 2008 04:12:17 PM
Old 02-04-2008
Straight shell does not do what you need. try perl:
Code:
#!/bin/ksh

get_tz()
{
perl -e '
     use POSIX;
     ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday, $isdst)=localtime(43200);
     ($sec1, $min1, $hour1, $mday, $mon, $year, $wday, $yday, $isdst)=gmtime(43200);      
     $diffmin=$min - $min1;
     $diff=$hour - $hour1;
     printf "%s%02d%02d\n", ($hour1 <= $hour)?"+":"-", abs($diff), abs($diffmin);
     '
}


mytimezone=$( get_tz)
echo "my time zone is: $mytimezone"

 

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POSIX::strptime(3pm)					User Contributed Perl Documentation				      POSIX::strptime(3pm)

NAME
POSIX::strptime - Perl extension to the POSIX date parsing strptime(3) function SYNOPSIS
($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = POSIX::strptime("string", "Format"); DESCRIPTION
Perl interface to strptime(3) FUNCTIONS
strptime ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = POSIX::strptime(string, format); The result for any value not extracted is not defined. Some platforms may reliably return "undef", but this is dependent on the strptime(3) function in the underlying C library. For example, only the following fields may be relied upon: my ($min, $hour) = ( POSIX::strptime( "01:23", '%H:%M' ) )[1,2]; my ($mday, $mon, $year) = ( POSIX::strptime( "2010/07/16", '%Y/%m/%d' ) )[3,4,5]; Furthermore, not all platforms will set the $wday and $yday elements. If these values are required, use "mktime" and "gmtime": use POSIX qw( mktime ); use POSIX::strptime qw( strptime ); my ($mday, $mon, $year) = ( POSIX::strptime( "2010/07/16", '%Y/%m/%d' ) )[3,4,5]; my $wday = ( gmtime mktime 0, 0, 0, $mday, $mon, $year )[6]; SEE ALSO
strptime(3) AUTHOR
Philippe M. Chiasson <gozer@cpan.org> Kim Scheibel <kim@scheibel.co.uk> REPOSITORY
http://svn.ectoplasm.org/projects/perl/POSIX-strptime/trunk/ COPYRIGHT
Copyright 2005 by Philippe M. Chiasson <gozer@cpan.org>. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. See http://www.perl.com/perl/misc/Artistic.html perl v5.14.2 2010-07-16 POSIX::strptime(3pm)
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