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Top Forums Shell Programming and Scripting Help needed on wrapper script Post 302901058 by MadeInGermany on Sunday 11th of May 2014 11:17:22 AM
Old 05-11-2014
Once you have the format assured, you can verify the date with the cal command.
Code:
            echo "enter the loadings date in YYYYMMDD format: "
            read dt
       
            # validates the date format
            echo "$dt" | grep -E -q '^201[1-9](0[1-9]|1[0-2])(0[1-9]|[12][0-9]|3[01])$'
            if [[ $? -ne 0 ]]; then
                   echo "========================================================================="
                   echo "Please enter the date in YYYYMMDD format. Terminating...No action done..."
                   exit
            else
                   year=${dt%????}
                   md=${dt#????}
                   month=${md%??}
                   day=${md#??}
                   cal $month $year | grep -q -w $((day))
                   if [[ $? -ne 0 ]]; then
                        echo "This date does not exist. Terminating...No action done." 
                        exit
                   else
                        .${HOME}/dbscripts/set_date.ksh $dt &
                        .${HOME}/dbscripts/data_load.ksh $file & 
                   fi
            fi

NB I have removed the double [ from the ERE that would allow a [ character in the input.
This User Gave Thanks to MadeInGermany For This Post:
 

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DATETIME.SETISODATE(3)							 1						    DATETIME.SETISODATE(3)

DateTime::setISODate - Sets the ISO date

       Object oriented style

SYNOPSIS
public DateTime DateTime::setISODate (int $year, int $week, [int $day = 1]) DESCRIPTION
Procedural style DateTime date_isodate_set (DateTime $object, int $year, int $week, [int $day = 1]) Set a date according to the ISO 8601 standard - using weeks and day offsets rather than specific dates. PARAMETERS
o $object -Procedural style only: A DateTime object returned by date_create(3). The function modifies this object. o $year - Year of the date. o $week - Week of the date. o $day - Offset from the first day of the week. RETURN VALUES
Returns the DateTime object for method chaining or FALSE on failure. CHANGELOG
+--------+---------------------------------------------------+ |Version | | | | | | | Description | | | | +--------+---------------------------------------------------+ | 5.3.0 | | | | | | | Changed the return value on success from NULL to | | | DateTime. | | | | +--------+---------------------------------------------------+ EXAMPLES
Example #1 DateTime.setISODate(3) example Object oriented style <?php $date = new DateTime(); $date->setISODate(2008, 2); echo $date->format('Y-m-d') . " "; $date->setISODate(2008, 2, 7); echo $date->format('Y-m-d') . " "; ?> Procedural style <?php $date = date_create(); date_isodate_set($date, 2008, 2); echo date_format($date, 'Y-m-d') . " "; date_isodate_set($date, 2008, 2, 7); echo date_format($date, 'Y-m-d') . " "; ?> The above examples will output: 2008-01-07 2008-01-13 Example #2 Values exceeding ranges are added to their parent values <?php $date = new DateTime(); $date->setISODate(2008, 2, 7); echo $date->format('Y-m-d') . " "; $date->setISODate(2008, 2, 8); echo $date->format('Y-m-d') . " "; $date->setISODate(2008, 53, 7); echo $date->format('Y-m-d') . " "; ?> The above example will output: 2008-01-13 2008-01-14 2009-01-04 Example #3 Finding the month a week is in <?php $date = new DateTime(); $date->setISODate(2008, 14); echo $date->format('n'); ?> The above examples will output: 3 SEE ALSO
DateTime.setDate(3), DateTime.setTime(3). PHP Documentation Group DATETIME.SETISODATE(3)
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