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Top Forums UNIX for Beginners Questions & Answers Search files between date ranges - Ctime usage Post 302997407 by Don Cragun on Friday 12th of May 2017 04:11:32 PM
Old 05-12-2017
You have a few issues that keep you from reaching your goal:
  1. Most filesystems do not keep track of when a file was created; the struct stat st_ctime field stores the timestamp of the last file status change. A file's status changes when a file is created, when a file's size changes (by truncating the contents of the file or by writing data to a position greater than the file's current size), or by changing the file's mode or access permissions.
  2. The find -ctime primary doesn't work on calendar dates; it works on multiple of 24 hours from the time you invoke find.
To find files whose last file contents modification time occurs on a given calendar date (or other period of time unrelated to when you invoke find), use touch to create one file with timestamps corresponding to the start time of your desired time period (startTimeFile in this example) and create another file with timestamps corresponding to the end time of your desired time period (endTimeFile) and then use:
Code:
find . -newer startTimeFile ! -newer endTimeFile

This User Gave Thanks to Don Cragun For This Post:
 

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Touch(3pm)						User Contributed Perl Documentation						Touch(3pm)

NAME
File::Touch - update access and modification timestamps, creating nonexistent files where necessary. SYNOPSIS
use File::Touch; @file_list = ('one.txt','../two.doc'); $count = touch(@file_list); use File::Touch; $reference_file = '/etc/passwd'; $touch_obj = File::Touch->new( reference => $reference_file, no_create => 1 ); @file_list = ('one.txt','../two.doc'); $count = $touch_obj->touch(@file_list); DESCRIPTION
Here's a list of arguments that can be used with the object-oriented contruction: atime_only => [0|1] If nonzero, change only the access time of files. Default is zero. mtime_only => [0|1] If nonzero, change only the modification time of files. Default is zero. no_create => [0|1] If nonzero, do not create new files. Default is zero. reference => $reference_file If defined, use timestamps from this file instead of current time. Default is undefined. atime => $time If defined, use this time (in epoch seconds) instead of current time for access time. mtime => $time If defined, use this time (in epoch seconds) instead of current time for modification time. Examples Update access and modification times, creating nonexistent files use File::Touch; my @files = ('one','two','three'); my $count = touch(@files); print "$count files updated "; Set access time forward, leave modification time unchanged use File::Touch; my @files = ('one','two','three'); my $day = 24*60*60; my $time = time() + 30 * $day; my $ref = File::Touch->new( atime_only => 1, time => $time ); my $count = $ref->touch(@files); print "$count files updated "; Set modification time back, update access time, do not create nonexistent files use File::Touch; my @files = ('one','two','three'); my $day = 24*60*60; my $time = time() - 30 * $day; my $ref = File::Touch->new( mtime => $time, no_create => 1 ); my $count = $ref->touch(@files); print "$count files updated "; AUTHOR
Nigel Wetters Gourlay (nwetters@cpan.org) COPYRIGHT
Copyright (c) 2001,2007,2009 Nigel Wetters Gourlay. All Rights Reserved. This module is free software. It may be used, redistributed and/or modified under the same terms as Perl itself. perl v5.10.0 2009-07-25 Touch(3pm)
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