Delete files older than 1week(dates need to be calculate based on file name) Post: 302999618

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Operating Systems Linux Red Hat Delete files older than 1week(dates need to be calculate based on file name) Post 302999618 by rbatte1 on Friday 23rd of June 2017 11:00:38 AM

06-23-2017

Moderator

Would it be a problem to extract the file creation time from the file name and use touch to set the time correctly? You can then use find far easier.

Is the date format year, month, day, hour, minute, second, millisecond? You can grab that bit and make a decision on that if you calculate the date before you want to erase the files, something like this:-

Code:

#!/bin/bash

# Calculate the cut-off value
earliest_date_allowed=$(date +%Y%m%d%H%M%S -d"1 week ago")
echo "\$earliest_date_allowed=\"$earliest_date_allowed\" or $(date -d"1 week ago")"
while read file
do
   # Extract the date part
   filedate="${file#*-}"            # removes up to first hyphen of filename
   filedate="${filedate%???-*}"     # Removes milliseconds to the end
   if [ $filedate -lt $earliest_date_allowed ]
   then
      echo "I would purge $file"
   fi
done < <(ls -1)                     # Run ls as input for the loop

It doesn't work with milliseconds though and relies on GNU-date. Are these a problem?

Does this get you close?
Robin

Last edited by rbatte1; 06-23-2017 at 12:02 PM.. Reason: Added a code comment

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LEARN ABOUT PHP

datetime.setdate

DATETIME.SETDATE(3)							 1						       DATETIME.SETDATE(3)

DateTime::setDate - Sets the date

       Object oriented style

SYNOPSIS

       public DateTime DateTime::setDate (int  $year, int  $month, int	$day)

DESCRIPTION

       Procedural style
       DateTime date_date_set (DateTime  $object, int  $year, int  $month, int	$day)

	Resets the current date of the DateTime object to a different date.

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 $month
		- Month of the date.

	      o $day
		- Day of the date.

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.setDate(3) example

	      Object oriented style

	      <?php
	      $date = new DateTime();
	      $date->setDate(2001, 2, 3);
	      echo $date->format('Y-m-d');
	      ?>

	      Procedural style

	      <?php
	      $date = date_create();
	      date_date_set($date, 2001, 2, 3);
	      echo date_format($date, 'Y-m-d');
	      ?>

	      The above examples will output:

	      2001-02-03

       Example #2

	      Values exceeding ranges are added to their parent values

	      <?php
	      $date = new DateTime();

	      $date->setDate(2001, 2, 28);
	      echo $date->format('Y-m-d') . "
";

	      $date->setDate(2001, 2, 29);
	      echo $date->format('Y-m-d') . "
";

	      $date->setDate(2001, 14, 3);
	      echo $date->format('Y-m-d') . "
";
	      ?>

	      The above example will output:

	      2001-02-28
	      2001-03-01
	      2002-02-03

SEE ALSO 
DateTime.setISODate(3), DateTime.setTime(3).
PHP Documentation Group 												       DATETIME.SETDATE(3)