Results 1 to 3 of 3

Thread: Trying to understand the modification time

  1. #1

    Member Since
    Mar 30, 2013
    Trying to understand the modification time

    I'm investigating a folder named Backups.backupdb on an external hard drive.
    I assume the folder was created by Time Machine.

    Running the "ls -l" command, the time displayed for Backups.backupdb is "June 1".
    I believe that this is the modification time (mtime).

    What I can not (or hardly) understand is that within subfolders of Backups.backupdb are some backups dated "June 2".

    Is is normal that the modification time of a parent folder does not change when its content change ?


  2. #2

    chscag's Avatar
    Member Since
    Jan 23, 2008
    Keller, Texas
    Within the backup folder that Time Machine creates should be a long list of the individual backups that it made after the first initial backup. So yes, the date of the initial backup or the creation date of the backup folder does not change with subsequent backups, only the individual backup dates will change as they are made.

  3. #3

    Member Since
    Mar 30, 2013

    Yes, there are several backup folders. What I find suprising is not the fact that the first backups keep their dates, as they're not altered by subsequent backups, but the fact that the "modification time" of the parent folder is not updated as it gets new content, i.e. a new subfolder, at each backup. Maybe was this chosen for OS performance reasons...

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Don't understand Time Machine
    By swoosta in forum macOS - Operating System
    Replies: 3
    Last Post: 03-04-2012, 09:21 AM
  2. Time machine. Help me understand please
    By jonesy16 in forum macOS - Operating System
    Replies: 4
    Last Post: 03-09-2011, 06:55 PM
  3. Help me understand Time Machine...huge file size
    By Trolle in forum macOS - Operating System
    Replies: 3
    Last Post: 02-19-2011, 12:28 PM
  4. Can someone please help me understand Time Capsule
    By mabortdrummer in forum Internet, Networking, and Wireless
    Replies: 4
    Last Post: 03-24-2008, 12:55 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts