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Top Forums Shell Programming and Scripting Pattern to match date in YYYY-MM-DD format on Linux machine Post 303010718 by as7951 on Saturday 6th of January 2018 12:30:05 AM
Old 01-06-2018
Pattern to match date in YYYY-MM-DD format on Linux machine

Hi Expert,

Request your help.
For date validation in csv file, i have written below code for linux machine
I want the date to be in format 2017-05-11(YYYY-MM-DD), if not present in this format the error should be printed.
Could you please help in finding the right pattern to match above date format

Code:
if ($14 !~ /^[0-9]{4}-(0[1-9]|1[0-2])-(0[1-9]|[1-2][0-9]|3[0-1])$/) {print "Error 131: Incorrect DocumentDate pattern", "Field position 14, Linenumber:"NR,$0}

but it is not working and if date is present in correct format then also i am getting the error as below
Code:
Error 131: Incorrect DocumentDate pattern Field position 14, Linenumber:2

 

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DATETIMEINTERFACE.FORMAT(3)						 1					       DATETIMEINTERFACE.FORMAT(3)

DateTime::format - Returns date formatted according to given format

       Object oriented style

SYNOPSIS
public string DateTime::format (string $format) DESCRIPTION
string DateTimeImmutable::format (string $format) string DateTimeInterface::format (string $format) Procedural style string date_format (DateTimeInterface $object, string $format) Returns date formatted according to given format. PARAMETERS
o $object -Procedural style only: A DateTime object returned by date_create(3) o $format - Format accepted by date(3). RETURN VALUES
Returns the formatted date string on success or FALSE on failure. EXAMPLES
Example #1 DateTimeInterface.format(3) example Object oriented style <?php $date = new DateTime('2000-01-01'); echo $date->format('Y-m-d H:i:s'); ?> Procedural style <?php $date = date_create('2000-01-01'); echo date_format($date, 'Y-m-d H:i:s'); ?> The above example will output: 2000-01-01 00:00:00 NOTES
This method does not use locales. All output is in English. SEE ALSO
date(3). PHP Documentation Group DATETIMEINTERFACE.FORMAT(3)
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