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Top Forums Shell Programming and Scripting Korn Shell Script - Getting yesterdays date Post 43158 by jsilva on Wednesday 12th of November 2003 11:00:04 AM
Old 11-12-2003
Hi,

You can use the script below, it will do more than you asked, but you can easly modify it... it was written by Tapani Tarvainen.

#! /usr/bin/ksh
# Get yesterday's date in YYYY-MM-DD format.
# With argument N in range 1..28 gets date N days before.
# Tapani Tarvainen January 2002
# This code is in the public domain.

OFFSET=${1:-1}

case $OFFSET in
*[!0-9]* | ???* | 3? | 29) print -u2 "Invalid input" ; exit 1;;
esac

eval `date "+day=%d; month=%m; year=%Y`
typeset -Z2 day month
typeset -Z4 year

# Subtract offset from day, if it goes below one use 'cal'
# to determine the number of days in the previous month.
day=$((day - OFFSET))
if (( day <= 0 )) ;then
month=$((month - 1))
if (( month == 0 )) ;then
year=$((year - 1))
month=12
fi
set -A days `cal $month $year`
xday=${days[$(( ${#days[*]}-1 ))]}
day=$((xday + day))
fi

print $year-$month-$day
print $month/$day/${year#??}
 

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INTLCALENDAR.GETMINIMALDAYSINFIRSTWEEK(3)				 1				 INTLCALENDAR.GETMINIMALDAYSINFIRSTWEEK(3)

IntlCalendar::getMinimalDaysInFirstWeek - Get minimal number of days the first week in a year or month can have

	Object oriented style

SYNOPSIS
public int IntlCalendar::getMinimalDaysInFirstWeek (void ) DESCRIPTION
Procedural style int intlcal_get_minimal_days_in_first_week (IntlCalendar $cal) Returns the smallest number of days the first week of a year or month must have in the new year or month. For instance, in the Gregorian calendar, if this value is 1, then the first week of the year will necessarily include January 1st, while if this value is 7, then the week with January 1st will be the first week of the year only if the day of the week for January 1st matches the day of the week returned by IntlCalendar.getFirstDayOfWeek(3); otherwise it will be the previous years last week. PARAMETERS
o $cal - The IntlCalendar resource. RETURN VALUES
An int representing a number of days or FALSE on failure. EXAMPLES
Example #1 IntlCalendar.getMinimalDaysInFirstWeek(3) <?php ini_set('date.timezone', 'UTC'); ini_set('intl.default_locale', 'en_US'); $cal = new IntlGregorianCalendar(2013, 0 /* January */, 2); var_dump(IntlDateFormatter::formatObject($cal, 'cccc')); // Wednesday var_dump($cal->getMinimalDaysInFirstWeek(), // 1 $cal->getFirstDayofWeek()); // 1 (Sunday) // Week 1 of 2013 var_dump(IntlDateFormatter::formatObject($cal, "'Week 'w' of 'Y")); $cal->setMinimalDaysInFirstWeek(4); // Still Week 1 of 2013 (1st week has 5 days in the new year) var_dump(IntlDateFormatter::formatObject($cal, "'Week 'w' of 'Y")); $cal->setMinimalDaysInFirstWeek(6); // Week 53 of 2012 var_dump(IntlDateFormatter::formatObject($cal, "'Week 'w' of 'Y")); The above example will output: string(9) "Wednesday" int(1) int(1) string(14) "Week 1 of 2013" string(14) "Week 1 of 2013" string(15) "Week 53 of 2012" PHP Documentation Group INTLCALENDAR.GETMINIMALDAYSINFIRSTWEEK(3)
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