sync to external drive

[Matthew Crews]

>-------- Original Message --------
>Subject: Re: sync to external drive
>Local Time: November 15, 2017 8:47 AM
>UTC Time: November 15, 2017 3:47 PM
>From: list at xenhideout.nl
>To: ubuntu-users at lists.ubuntu.com
>
>Gary J. Kirkpatrick schreef op 15-11-2017 14:33:
>
> Thanks for the replies.  What I am looking for is to back up some data
> files (images of my artwork- they are synced with Dropbox but I also
> want a local copy).  So what I would like is each time I make a change
> on my hard drive the change would be reflected on the backup medium (I
> want to use the sd card).
>
> I am under the impression that a backup tool would not remove a file
> from a back up device even if it is removed from the hard drive so I
> used the term 'sync.'  Am I correct in this?  Cloud servers sync but
> backup tools do not?
>
> thanks
>
> garyk
>

I was doing some further research into this, and git-annex might suit your needs in addition to what others have suggested.

https://git-annex.branchable.com/

Also available in the repositories

https://packages.ubuntu.com/artful/git-annex

-Matt