>From the documentation:
"--help Print a short help page describing the options available in rsync
and exit. For backward-compatibility with older versions of rsync, the
help will also be output if you use the -h option without any other args".
Also from the documentation, having the "r" flag is redundant, though not
problematic (it is not doing any harm, it just makes your command slightly
harder to debug).
"-a, --archive This is equivalent to -rlptgoD. It is a quick way of saying
you want recursion and want to preserve almost everything (with -H being a
notable omission). The only exception to the above equivalence is when
--files-from is specified, in which case -r is not implied.
Note that -a does not preserve hardlinks, because finding multiply-linked
files is expensive. You must separately specify -H".
I do not see how the command that you ran would delete files from the
source directory. It certainly would not have deleted anything from your
root ("/"). I did not see the use of sudo in your example, without which
rsync would simply not have had the requisite permissions to do some damage
to the base OS. Something else happened on your system *other* than that
rsync command.
If you really just want a simple solution that backs up your home folder,
rdiff-backup is what I use in this exact use case. There are also quite a
few other options, and the default Ubuntu backup program (I forget what it
is called) seems to do a good job of this as well. You really want to
automate your backups so I would look at options that either do this
directly or are easily run from cron.
On Sat, May 3, 2014 at 7:53 PM, Joe S <joes...@shaw.ca> wrote:
> I see 2 entries in man rsync. I thought that was the first.
>
> -h, --human-readable output numbers in a human-readable
> -h, --help show this help (if used after
> --daemon)
>
> On Sat, 03 May 2014 10:15:24 -0600
> caziz <ca...@cuug.ab.ca> wrote:
>
> > -h is just help. case matter did you mean -H??
> >
> >
> > On 14-05-03 07:28 AM, Joe S wrote:
> > > This is the command I used:
> > > rsync -avrh --numerical-ids /home/joe /media/backup/
> > >
> > > --numerical-ids is the only mistake I can see. /media/backup
> > > is a second drive that I used for backup. I've used rsync
> > > for a number of years and never had a problem before.
> > >
> > > On Fri, 02 May 2014 22:50:22 -0600
> > > Bogi <khan...@shaw.ca> wrote:
> > >
> > >> Hi Joe,
> > >> You should post your complete command line. -avrh does not
> > >> designate a deletion of files, --numeric-ids only designates
> > >> how to transfer the ids of the owner in terms of user and
> > >> group, the default is username and group name, otherwise, it
> > >> will transfer the numeric values of userid and groupid.
> > >> Still no indication to delte originals. So please post the
> > >> full command line so we can replicate the problem.
> > >>
> > >> Cheers
> > >> Sam
> > >>
> > >> On May 2, 2014 Friday 21:00:02 Joe S wrote:
> > >>> I did a backup with rsync today and had a problem. I used
> > >>> this command: rxync -avrh /home/joe /media/backup/
> > >>> I realized --numerial-ids should have been numeric-ids, but
> > >>> a little to late. Rsync only copied some of the files over
> > >>> and erased a lot of my installation in /home and / . I had
> > >>> to reinstall. My question is why wouldn't rsync complain if
> > >>> the option was wrong? Or was this something else that is a
> > >>> problem?
> > >>>
> > >>> Thanks
> > >>>
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