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Full Discussion: Getting week number of the "Monday"
Top Forums Shell Programming and Scripting Getting week number of the "Monday" Post 302095411 by Perderabo on Monday 6th of November 2006 08:14:31 PM
Old 11-06-2006
I don't really follow you here. But read the date arithmetic article in our FAQ section and look at datecalc, which can probably do whatever it is that you want to do.

datecalc -c 2006 10 1

will return an integer from 0 to 6 to indicate the day of the week for Oct 1, 2006. Once you have the DOW of the first day of a month, subtract that from 9 which will give the the day of the first or second Monday in the month. So if that is larger than 7, subtract 7 from it. Now you are guaranteed to have the day of the month which is the first Monday.
 

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LEARN ABOUT OPENSOLARIS

langinfo.h

langinfo.h(3HEAD)						      Headers							 langinfo.h(3HEAD)

NAME

       langinfo.h, langinfo - language information constants

SYNOPSIS

       #include <langinfo.h>

DESCRIPTION

       The  <langinfo.h>  header  contains  the constants used to identify items of langinfo data (see nl_langinfo(3C)). The type of the constant,
       nl_item, is defined as described in <nl_types.h>.

       The following constants are defined. The entries under Category indicate in which setlocale(3C) category each item is defined.

		       |		|
	  Constant     |   Category	|		 Meaning
       ----------------+----------------+----------------------------------------
       CODESET	       |LC_CTYPE	|codeset name
       ----------------+----------------+----------------------------------------
       D_T_FMT	       |LC_TIME 	|string for formatting date and time
       ----------------+----------------+----------------------------------------
       D_FMT	       |LC_TIME 	|date format string
       ----------------+----------------+----------------------------------------
       T_FMT	       |LC_TIME 	|time format string
       ----------------+----------------+----------------------------------------
       T_FMT_AMPM      |LC_TIME 	|a.m. or p.m. time format string
       ----------------+----------------+----------------------------------------
       AM_STR	       |LC_TIME 	|ante-meridiem affix
       ----------------+----------------+----------------------------------------
       PM_STR	       |LC_TIME 	|post-meridiem affix
       ----------------+----------------+----------------------------------------
       DAY_1	       |LC_TIME 	|name of the first day of the week  (for
		       |		|example, Sunday)
       ----------------+----------------+----------------------------------------
       DAY_2	       |LC_TIME 	|name of the second day of the week (for
		       |		|example, Monday)
       ----------------+----------------+----------------------------------------
       DAY_3	       |LC_TIME 	|name of the third day of the week  (for
		       |		|example, Tuesday)
       ----------------+----------------+----------------------------------------
       DAY_4	       |LC_TIME 	|name of the fourth day of the week (for
		       |		|example, Wednesday)
       ----------------+----------------+----------------------------------------
       DAY_5	       |LC_TIME 	|name of the fifth day of the week  (for
		       |		|example, Thursday)
       ----------------+----------------+----------------------------------------
       DAY_6	       |LC_TIME 	|name  of the sixth day of the week (for
		       |		|example, Friday)
       ----------------+----------------+----------------------------------------
       DAY_7	       |LC_TIME 	|name of the seventh  day  of  the  week
		       |		|(for example, Saturday)
       ----------------+----------------+----------------------------------------
       ABDAY_1	       |LC_TIME 	|abbreviated  name  of	the first day of
		       |		|the week
       ----------------+----------------+----------------------------------------
       ABDAY_2	       |LC_TIME 	|abbreviated name of the second  day  of
		       |		|the week
       ----------------+----------------+----------------------------------------

       ABDAY_3	       |LC_TIME 	|abbreviated  name  of	the third day of
		       |		|the week
       ----------------+----------------+----------------------------------------
       ABDAY_4	       |LC_TIME 	|abbreviated name of the fourth  day  of
		       |		|the week
       ----------------+----------------+----------------------------------------
       ABDAY_5	       |LC_TIME 	|abbreviated  name  of	the fifth day of
		       |		|the week
       ----------------+----------------+----------------------------------------
       ABDAY_6	       |LC_TIME 	|abbreviated name of the seventh day  of
		       |		|the week
       ----------------+----------------+----------------------------------------
       ABDAY_7	       |LC_TIME 	|abbreviated  name of the seventh day of
		       |		|the week
       ----------------+----------------+----------------------------------------
       MON_1	       |LC_TIME 	|name of the first month of the year
       ----------------+----------------+----------------------------------------
       MON_2	       |LC_TIME 	|name of the second month
       ----------------+----------------+----------------------------------------
       MON_3	       |LC_TIME 	|name of the third month
       ----------------+----------------+----------------------------------------
       MON_4	       |LC_TIME 	|name of the fourth month
       ----------------+----------------+----------------------------------------
       MON_5	       |LC_TIME 	|name of the fifth month
       ----------------+----------------+----------------------------------------
       MON_6	       |LC_TIME 	|name of the sixth month
       ----------------+----------------+----------------------------------------
       MON_7	       |LC_TIME 	|name of the seventh month
       ----------------+----------------+----------------------------------------
       MON_8	       |LC_TIME 	|name of the eighth month
       ----------------+----------------+----------------------------------------
       MON_9	       |LC_TIME 	|name of the ninth month
       ----------------+----------------+----------------------------------------
       MON_10	       |LC_TIME 	|name of the tenth month
       ----------------+----------------+----------------------------------------
       MON_11	       |LC_TIME 	|name of the eleventh month
       ----------------+----------------+----------------------------------------
       MON_12	       |LC_TIME 	|name of the twelfth month
       ----------------+----------------+----------------------------------------
       ABMON_1	       |LC_TIME 	|abbreviated name of the first month
       ----------------+----------------+----------------------------------------
       ABMON_2	       |LC_TIME 	|abbreviated name of the second month
       ----------------+----------------+----------------------------------------
       ABMON_3	       |LC_TIME 	|abbreviated name of the third month
       ----------------+----------------+----------------------------------------
       ABMON_4	       |LC_TIME 	|abbreviated name of the fourth month
       ----------------+----------------+----------------------------------------
       ABMON_5	       |LC_TIME 	|abbreviated name of the fifth month
       ----------------+----------------+----------------------------------------
       ABMON_6	       |LC_TIME 	|abbreviated name of the sixth month
       ----------------+----------------+----------------------------------------
       ABMON_7	       |LC_TIME 	|abbreviated name of the seventh month
       ----------------+----------------+----------------------------------------
       ABMON_8	       |LC_TIME 	|abbreviated name of the eighth month
       ----------------+----------------+----------------------------------------
       ABMON_9	       |LC_TIME 	|abbreviated name of the ninth month
       ----------------+----------------+----------------------------------------
       ABMON_10        |LC_TIME 	|abbreviated name of the tenth month
       ----------------+----------------+----------------------------------------
       ABMON_11        |LC_TIME 	|abbreviated name of the eleventh month
       ----------------+----------------+----------------------------------------
       ABMON_12        | LC_TIME	|abbreviated name of the twelfth month
       ----------------+----------------+----------------------------------------
       ERA	       |LC_TIME 	|era description segments
       ----------------+----------------+----------------------------------------

       ERA_D_FMT       |LC_TIME 	|era date format string
       ----------------+----------------+----------------------------------------
       ERA_D_T_FMT     |LC_TIME 	|era date and time format string
       ----------------+----------------+----------------------------------------
       ERA_T_FMT       |LC_TIME 	|era time format string
       ----------------+----------------+----------------------------------------
       ALT_DIGITS      |LC_TIME 	|alternative symbols for digits
       ----------------+----------------+----------------------------------------
       RADIXCHAR       |LC_NUMERIC	|radix character
       ----------------+----------------+----------------------------------------
       THOUSEP	       |LC_NUMERIC	|separator for thousands
       ----------------+----------------+----------------------------------------
       YESEXPR	       |LC_MESSAGES	|affirmative response expression
       ----------------+----------------+----------------------------------------
       NOEXPR	       |LC_MESSAGES	|negative response expression
       ----------------+----------------+----------------------------------------
       YESSTR	       |LC_MESSAGES	|affirmative response for yes/no queries
       ----------------+----------------+----------------------------------------
       NOSTR	       |LC_MESSAGES	|negative response ro yes/no queries
       ----------------+----------------+----------------------------------------
       CRNCYSTR        |LC_MONETARY	|local currency symbol, preceded by  '-'
		       |		|if  the  symbol sould appear before the
		       |		|value, '+' if the symbol should  appear
		       |		|after	the  value, or '.' if the symbol
		       |		|should replace the radix character

       If the locale's values for p_cs_precedes and n_cs_precedes do not match, the value of nl_langinfo(CRNCYSTR) is unspecified.

       The <langinfo.h> header declares the following as a function:

	 char *nl_langinfo(nl_item);

       Inclusion of <langinfo.h> header may also make visible all symbols from <nl_types.h>.

USAGE

       Wherever possible, users are advised to use functions compatible with those in the ISO C standard to access items of langinfo data. In par-
       ticular, the strftime(3C) function should be used to access date and time information defined in category LC_TIME. The localeconv(3C) func-
       tion should be used to access information corresponding to RADIXCHAR, THOUSEP, and CRNCYSTR.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Standard			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       mkmsgs(1), localeconv(3C), nl_langinfo(3C), nl_types.h(3HEAD), setlocale(3C), strftime(3C), attributes(5), standards(5)

SunOS 5.11							    30 Aug 2002 						 langinfo.h(3HEAD)
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