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Top Forums Shell Programming and Scripting Delete File in a Directory Using a Condition Post 302849913 by shekhar2010us on Tuesday 3rd of September 2013 03:19:53 PM
Old 09-03-2013
Delete File in a Directory Using a Condition

Hello,

I have a directory with many files whose creation time is distributed all over the day.

I need ANY 20 files per hour. So, I need
20 files for hour 00
20 files for hour 01
...
20 files for hour 23

What I have done so far is not great. Here is the code:
Code:
# get the Month
a=`echo $(date) | awk -F" " '{print $2}'`
# get the date
b=`echo $(date) | awk -F" " '{print $3}'`
c="$a  $b"

# loop over hours and minutes to generate all possible combination
for (( hh=01; hh<=23; hh++ ))
do
  for (( mm=01; mm<=59; mm++ ))
  do
    if [ "${#hh}" == 1 ]; then
      h=0$hh
    else
      h=$hh
    fi
    if [ "${#mm}" == 1 ]; then
      m=0$mm
    else
      m=$mm
    fi
    # this is the final pattern for which I need files
    pattern=" $c $h:$m"
    echo $pattern
  done
done

Still this is incomplete. What I want to do next is that: inside the loop, grep with the pattern and delete one but all..... So, I have 1 file per minute.

I hope that there is a much better way to do this. I just need any 'x' number of files per hour.

Thanks
 

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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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