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Top Forums Shell Programming and Scripting How to calculate specific hours between 2 dates Post 302218499 by joeyg on Friday 25th of July 2008 10:24:13 AM
Old 07-25-2008
Hammer & Screwdriver I think the one-day-at-a-time is best

There are other reasons to do this one day at a time:
(a) account for holidays, vacations
(b) allow for lookups when special conditions exist for a day

By this, think of a day as 20080725. Now, while inside your main loop, do the following; although with a $var and not a fixed #.
Code:
if [ -s /work/calendar/20080725 ]    
  then
  read the file to learn the special condition for the day
fi

The file may contain various fields you could read, like
max_hrs=400 ;scheduled half day
max_hrs=0 ;no work day
etc..
 

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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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