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Full Discussion: Get Day of Week from date
Operating Systems HP-UX Get Day of Week from date Post 302173630 by jim mcnamara on Friday 7th of March 2008 10:20:57 AM
Old 03-07-2008
Change the variable $fmt to get weekday in the format you want I added a comment there:
try -
Code:
#!/bin/ksh

# input format YYYY-MM-DD prints day name
dow()  
{
	perl -e '
		use POSIX qw(strftime);
		$fmt = "%A";  # %a = abbreviated weekday %u = weekday number	
		$mday = substr("$ARGV[0]", 8, 2);
		$mon =  substr("$ARGV[0]", 5 ,2);
		$year = substr("$ARGV[0]", 0 ,4);
		$weekday =
		  strftime($fmt, 0, 0, 0, $mday , $mon - 1, $year - 1900, -1, -1, -1);
		print "$weekday";
		' "$1"
}
echo "today is $(date)"
echo "$(dow `date "+%Y-%m-%d"` )"
echo "2007-10-03 was a $(dow "2007-10-03")"

 

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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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