determine last day of the month Post: 302321893

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Top Forums Shell Programming and Scripting determine last day of the month Post 302321893 by jim mcnamara on Tuesday 2nd of June 2009 10:31:37 AM

06-02-2009

Registered User

Code:

#!/bin/ksh

isleapyr()
{
        year=$1
        if [[ $(( $year % 4 )) -eq  0 && $(( $year % 100 )) -ne 0  \
                          || $(( $year % 400 )) -eq 0 ]] ; then     
           echo 1                                                   
        else                          
           echo 0
        fi
}

days_in_a_month()
{
        month=$(( $1 - 1 ))
        start=0
        result=0

        if [[ $( isleapyr $2 ) -eq 1 ]] ; then
                set -A arr 31 29 31 30 31 30 31 31 30 31 30 31
        else
                set -A arr 31 28 31 30 31 30 31 31 30 31 30 31
        fi
        export mxdays=${arr[month]}
        
												
}
typeset -i thismonth
typeset -i today
typeset -i thisyear
date +"%d %m %Y" | read today thismonth thisyear
days_in_a_month $thismonth $thisyear 
if [[ $mxdays -eq $today ]] ; then
   echo "last DOM"
else
   echo "not last DOM"
fi

try something like this. Note that some shells like ksh93 and the GNU date command will also do date arithmetic for you. This assumes just ksh

jim mcnamara

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LEARN ABOUT SUSE

holidays

holidays(4)							   File Formats 						       holidays(4)

NAME

       holidays - prime/nonprime table for the accounting system

SYNOPSIS

       /etc/acct/holidays

DESCRIPTION

       The   /etc/acct/holidays file describes which hours are considered prime time and which days  are holidays.  Holidays and weekends are con-
       sidered non-prime time hours.  /etc/acct/holidays is used by the accounting system.

       All lines beginning with an "*" are comments.

       The  /etc/acct/holidays file consists of two sections.  The first non-comment line defines the current year and the start time of prime and
       non-prime time hours, in the form:

       current_year	 prime_start	  non_prime_start

       The remaining non-comment lines define the holidays in the  form:

       month/day     company_holiday

       Of these two fields, only the  month/day is actually used by  the accounting system programs.

       The  /etc/acct/holidays file must be updated each year.

EXAMPLES

       Example 1: Example of the /etc/acct/holidays file.

       The following is an example of the /etc/acct/holidays file:

       * Prime/Nonprime Table for the accounting system
       *
       * Curr	  Prime     Non-Prime
       * Year	  Start     Start
       *
	 1991	  0830	   1800
       *
       * only the first column (month/day) is significant.
       *
       * month/day    Company Holiday
       *
	 1/1	      New Years Day
	 5/30	      Memorial Day
	 7/4	      Indep. Day
	 9/5	      Labor Day
	 11/24	      Thanksgiving Day
	 11/25	      day after Thanksgiving
	 12/25	      Christmas
	 12/26	      day after Christmas

SEE ALSO

       acct(1M)

SunOS 5.10							    28 Mar 1991 						       holidays(4)

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