To back up a local UNIX serving box (ALIX1C motherboard with FreeBSD), I wrote a simple but efficient bash script to save all or part of it in a DMG image disk file. This backup should be used as often as required (launching with cron needs a password-free RSA login). This backup is a differential one, and an exact replication is done assuming the RSA user has sufficient privileges to do so.

Why save in a DMG?
  • To avoid my Mac managing another file system deep tree.
  • To simplify moving the backup.
I'm aware I'm losing Time Machine benefits with such a solution, but the script is very easy to modify to sync to a simple file system local folder. Personnaly, my DMG is placed on my Time Machine disk, to avoid filtering the Apple Backup system.

Prerequisites:

For security and convenience, I use ssh transfering protocol with a shared RSA key. If you do not know how to set this up, you should look at that kind of se...
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This entry was posted on Wednesday, August 27th, 2008 at 3:30 pm and is filed under News. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.