On 10Dec2009 00:16, kevin <kevin@xxxxxxxxxxxxxx> wrote:
| I would like to know if this will work with fc9:
|
| # sudo su
| # cd /
| # tar cvpzf backup.tgz --exclude=/proc --exclude=/lost+found
| --exclude=/backup.tgz --exclude=/mnt --exclude=/sys /
|
| What I really want to know is this. I have two systems that are
| identical and would like to just copy one to the other and keep all
| permissions for each of the files and folders copied. Is this
| feasible or could someone point me to the right direction with some
| kind of tutorial?
I suggest rsync instead of tar. You can do stuff with tar like this:
ssh master_system 'cd /; tar cf - .....' | ( cd /; tar xf - )
but it has several problems:
- it will overwrite stuff, changed or not
- it copies all the data over the link, changed or not
- it won't delete stuff if the master_system has stuff removed
Rsync has a highly efficient algorithm that copies only changed data,
options for delete and an exclusion system somewhat more expressive than
tar's one.
Personally I recommend:
- being more targeted: copy what needs to be the same only
an highly inclusive copy such as yours risks damaging the second
system if someone is making local changes
- copy on a per-filesystem basis
This really depends on your needs, which you need to spell out in
more detail.
The only time I've done what you're describing (copying everything)
was on a system with a spare drive; I would copy the root, /var etc
partitions to the spare drive. Each copy was only for its own
filesystem, using rsync's -x option.
That prevents walkig off into /home etc, which I didn't want to do.
See rsync's manual page. Read it a few times.
--
Cameron Simpson <cs@xxxxxxxxxx> DoD#743
http://www.cskk.ezoshosting.com/cs/
Four lines good, eight lines bad. - the signature farm
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