Verifying backups

Ronald F. Guilmette rfg at
Thu Oct 1 20:48:13 UTC 2015

In message <560CE706.303 at>, 
Kevin Korb <kmk at> wrote:

>Yes, when it comes to local copies cp is significantly faster than
>rsync.  Without --link-dest there isn't much advantage to using rsync
>for backups.  The only thing you get beyond cp -au is --delete.

I just now remembered the (forehead slap) bloody obvious reason I decided
to use rsync to make and maintain my backup drive(s).

Yes, it theory I could have used something simpler... cp -R or else
maybe cpio -p... but those just copy everything blindly.  For my
backups, I only need/want to have the NEW and/or MODIFIED files
copied to the backup drive.  (And also, of course, I need to have
files that have been deleted on the main drive be deleted also on
the backup drive.)

Rsync does everything I want as far as making and maintaining backups.
I could also have used FreeBSD backup & restore programs, but for
reasons I can't really remember anymore, I concluded that rsync was
the better option.


P.S.  I have no idea what the -u option for cp is supposed to do.
I guess that must be a Linux-ism.  The FreeBSD man page for cp doesn't
mention any such thing as a -u option.

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