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Full Discussion: validate timestamp
Top Forums Shell Programming and Scripting validate timestamp Post 302611455 by Chubler_XL on Thursday 22nd of March 2012 09:33:01 PM
Old 03-22-2012
If you have GNU date (supports -d)

This will do it:

Code:
if date -d "$(echo $1 | sed 's/-//;s/-//;s/-/ /')" > /dev/null 2>&1
then
   echo min_tstmp is valid
else
   echo min_tstmp is invalid timestamp
fi
 
if date -d "$(echo $2 | sed 's/-//;s/-//;s/-/ /')" > /dev/null 2>&1
then
   echo max_tstmp is valid
else
   echo max_tstmp is invalid timestamp
fi

or
Code:
D1=$(date -d "$(echo $1 | sed 's/-//;s/-//;s/-/ /')" +%s 2> /dev/null)
D2=$(date -d "$(echo $2 | sed 's/-//;s/-//;s/-/ /')" +%s 2> /dev/null)
if [ -n "$D1" -a -n "$D2" -a ${D1:-0} -gt ${D2:-0} ]
then
   echo "min_tstmp is after max_tstmp"
else
   [ -n "$D1" ] && echo min_tstmp is valid || echo min_tstmp is invalid timestamp 
   [ -n "$D2" ] && echo max_tstmp is valid || echo max_tstmp is invalid timestamp
fi


Last edited by Chubler_XL; 03-22-2012 at 10:49 PM..
 

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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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