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Top Forums UNIX for Beginners Questions & Answers Split large file into 24 small files on one hour basis Post 303036435 by Neo on Wednesday 26th of June 2019 07:03:10 AM
Old 06-26-2019
If it was me, who processes text files with PHP, I would do something like this:

use the PHP date function, like so:

Code:
date(h,$timestamp);

Code:
// read the file.
// foreach line in the file as entry
// get the formatted date in each entry and convert it to unix timestamp ($timestamp)
$hour = date(h,$timestamp);
// write append entry to 'filename_ '.$hour.'.txt' or whatever you want to call these 24 files.

This is almost trivial in PHP using date().

Hope this helps.

EDIT: See next post for a more complete PHP solution.
 

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DATETIME.SETTIME(3)							 1						       DATETIME.SETTIME(3)

DateTime::setTime - Sets the time

       Object oriented style

SYNOPSIS
public DateTime DateTime::setTime (int $hour, int $minute, [int $second]) DESCRIPTION
Procedural style DateTime date_time_set (DateTime $object, int $hour, int $minute, [int $second]) Resets the current time of the DateTime object to a different time. PARAMETERS
o $object -Procedural style only: A DateTime object returned by date_create(3). The function modifies this object. o $hour - Hour of the time. o $minute - Minute of the time. o $second - Second of the time. 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.setTime(3) example Object oriented style <?php $date = new DateTime('2001-01-01'); $date->setTime(14, 55); echo $date->format('Y-m-d H:i:s') . " "; $date->setTime(14, 55, 24); echo $date->format('Y-m-d H:i:s') . " "; ?> Procedural style <?php $date = date_create('2001-01-01'); date_time_set($date, 14, 55); echo date_format($date, 'Y-m-d H:i:s') . " "; date_time_set($date, 14, 55, 24); echo date_format($date, 'Y-m-d H:i:s') . " "; ?> The above examples will output something similar to: 2001-01-01 14:55:00 2001-01-01 14:55:24 Example #2 Values exceeding ranges are added to their parent values <?php $date = new DateTime('2001-01-01'); $date->setTime(14, 55, 24); echo $date->format('Y-m-d H:i:s') . " "; $date->setTime(14, 55, 65); echo $date->format('Y-m-d H:i:s') . " "; $date->setTime(14, 65, 24); echo $date->format('Y-m-d H:i:s') . " "; $date->setTime(25, 55, 24); echo $date->format('Y-m-d H:i:s') . " "; ?> The above example will output: 2001-01-01 14:55:24 2001-01-01 14:56:05 2001-01-01 15:05:24 2001-01-02 01:55:24 SEE ALSO
DateTime.setDate(3), DateTime.setISODate(3). PHP Documentation Group DATETIME.SETTIME(3)
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