tar, cpio, or cp?
Hi Torsten! > I use: tar cvf /dev/st0 . TH>I regulary create backups of my whole system using tar on SCSI tapes. What about symbolic links if the link is restored before the file it is pointing to? Is this handled correctly? MbG, Ekkehard --- OS/2 Merlin - mchtig magisch! -- -- TO UNSUBSCRIBE FROM THIS MAILING LIST: e-mail the word "unsubscribe" to [EMAIL PROTECTED] . Trouble? e-mail to [EMAIL PROTECTED] .
Re: tar, cpio, or cp?
"Frere Roy" <[EMAIL PROTECTED]> writes: > Your question prompted me to think about the way I make backups of > my Debian system to tape. > > I use: tar cvf /dev/st0 . > > Could someone on the list please tell me if I can restore my > complete working system from the archive made in this fashion - or > suggest a better way ! I regulary create backups of my whole system using tar on SCSI tapes. After repartitioning my hard discs I was able to restore one of these backups without any problem, no manual intervention was neccessary. I just mkefs all filesystem, mounted them as neccessary, did the restore, and adjusted the /etc/fstab and /etc/lilo.conf. Lilo just run once and my system was working again. Torsten -- I haven't lost my mind -- it's backed up on tape somewhere. Fortune Cookie PGP Public key available -- TO UNSUBSCRIBE FROM THIS MAILING LIST: e-mail the word "unsubscribe" to [EMAIL PROTECTED] . Trouble? e-mail to [EMAIL PROTECTED] .
Re: tar, cpio, or cp?
>tar cf /path | ( cd other/path ; tar xvf -) >cp -a /path /other/path > Are there real differences between the three? What about symlinks, > hard links, empty dirs, devices? I know, I could read the manuals, Your question prompted me to think about the way I make backups of my Debian system to tape. I use: tar cvf /dev/st0 . Could someone on the list please tell me if I can restore my complete working system from the archive made in this fashion - or suggest a better way ! Thanks, Frere Roy -- Taize Community, 71250 TAIZE, France Personal email: [EMAIL PROTECTED] To contact Taize: [EMAIL PROTECTED] To visit Taize: [EMAIL PROTECTED] List of useful info: [EMAIL PROTECTED] Web site http://www.taize.fr -- TO UNSUBSCRIBE FROM THIS MAILING LIST: e-mail the word "unsubscribe" to [EMAIL PROTECTED] . Trouble? e-mail to [EMAIL PROTECTED] .
Re: tar, cpio, or cp?
On Tue, 25 Nov 1997, Tommi Virtanen wrote: > On Tue, Nov 25, 1997 at 10:40:10AM +0100, Francesco Potorti` wrote: > > > Why not > >cp -a /path /other/path > > Won't handle devices, pipes, etc. It does here. $ cp --version cp (GNU fileutils) 3.16 $ Remco -- TO UNSUBSCRIBE FROM THIS MAILING LIST: e-mail the word "unsubscribe" to [EMAIL PROTECTED] . Trouble? e-mail to [EMAIL PROTECTED] .
Re: tar, cpio, or cp?
On Tue, Nov 25, 1997 at 10:40:10AM +0100, Francesco Potorti` wrote: >tar cf /path | ( cd other/path ; tar xvf -) This one's good. >cd /path; find . | cpio -dump /other/path This one (actually, find) won't handle filenames with newlines. If dump would have something like xargs -0 parameter it would be better. echo test >'new line' > Why not >cp -a /path /other/path Won't handle devices, pipes, etc. > but after a first look none of the three seems to do everything right, Why isn't the tar one good? -- [EMAIL PROTECTED] - it's a valid address w/o spam | +358-50-5124907 f u cn rd ths, thn u cn rd perl 2 | rm -rf / && echo bye-bye. | --tv -- TO UNSUBSCRIBE FROM THIS MAILING LIST: e-mail the word "unsubscribe" to [EMAIL PROTECTED] . Trouble? e-mail to [EMAIL PROTECTED] .
Re: tar, cpio, or cp?
Peter S Galbraith wrote: tar cf /path | ( cd other/path ; tar xvf -) [EMAIL PROTECTED] (Stephen Zander) writes: cd /path; find . | cpio -dump /other/path Why not cp -a /path /other/path Are there real differences between the three? What about symlinks, hard links, empty dirs, devices? I know, I could read the manuals, but after a first look none of the three seems to do everything right, that's why I am asking. Francesco -- TO UNSUBSCRIBE FROM THIS MAILING LIST: e-mail the word "unsubscribe" to [EMAIL PROTECTED] . Trouble? e-mail to [EMAIL PROTECTED] .
Re: tar, cpio, or cp?
Peter S Galbraith wrote: > The asterisk was perhaps a bad example. This works for me (including all > dot files): > > tar cf /path | ( cd other/path ; tar xvf -) > > Some people add a bunch of other flags to tar. Wading in late but Why not cd /path; find . | cpio -dump /other/path Does everything, leaves it just as it was. Or if you don't want to cross file system boundaries cd /path; find . -mount | cpio -dump /other/path (We now return to your regularly scheduled messages...) Stephen --- "Normality is a statistical illusion." -- me -- TO UNSUBSCRIBE FROM THIS MAILING LIST: e-mail the word "unsubscribe" to [EMAIL PROTECTED] . Trouble? e-mail to [EMAIL PROTECTED] .
Re: tar, cpio, or cp?
Lorens Kockum wrote: > On Fri, Nov 21, 1997 at 08:58:56PM +0100, Olivier THARAN wrote: > > > > (cd dir1 && tar cv *) | (cd dir2 && tar xf -) > > which preserves everything (dunno about times however). > > Huh? What about files beginning with a '.' that are not expanded by the > '*'? That's just to begin with ... use cpio. The asterisk was perhaps a bad example. This works for me (including all dot files): tar cf /path | ( cd other/path ; tar xvf -) Some people add a bunch of other flags to tar. -- Peter Galbraith, research scientist <[EMAIL PROTECTED]> Maurice-Lamontagne Institute, Department of Fisheries and Oceans Canada P.O. Box 1000, Mont-Joli Qc, G5H 3Z4 Canada 418-775-0852 - FAX 418-775-0546 -- TO UNSUBSCRIBE FROM THIS MAILING LIST: e-mail the word "unsubscribe" to [EMAIL PROTECTED] . Trouble? e-mail to [EMAIL PROTECTED] .
Re: tar, cpio, or cp?
On Fri, Nov 21, 1997 at 08:58:56PM +0100, Olivier THARAN wrote: > > (cd dir1 && tar cv *) | (cd dir2 && tar xf -) > which preserves everything (dunno about times however). Heuh? What about files beginning with a '.' that are not expanded by the '*'? That's just to begin with ... use cpio. -- include Lorens KOCKUM ( [EMAIL PROTECTED] ) -- TO UNSUBSCRIBE FROM THIS MAILING LIST: e-mail the word "unsubscribe" to [EMAIL PROTECTED] . Trouble? e-mail to [EMAIL PROTECTED] .
Re: tar, cpio, or cp?
On Fri, Nov 21, 1997 at 01:40:51PM -0500, Alex Yukhimets wrote: > Does anyone know the best way to copy a huge directory tree (~1Gig) > to another disk (mounted at some point)? I need to preserve the > ownerships and permissions, preservation of times are optional. You can try : (cd dir1 && tar cv *) | (cd dir2 && tar xf -) which preserves everything (dunno about times however). olive -- Olivier Tharan, <[EMAIL PROTECTED]> The determined programmer can write a FORTRAN program in any language. -- TO UNSUBSCRIBE FROM THIS MAILING LIST: e-mail the word "unsubscribe" to [EMAIL PROTECTED] . Trouble? e-mail to [EMAIL PROTECTED] .
Re: tar, cpio, or cp?
> I don't know if this works under Linux, but under Solaris we (egr)
> have used dump to do this. I would try using dump of a filesystem
> to another filesystem. I'm no authority on this... so please
> dispute me if I'm crazy.
Thanks to everybody for quick response.
I guess cpio is the best bet.
The disadvantage of dump is that it will copy the whole filesystem
even if it is empty and will definitely not fight fragmentation.
Alex Y.
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Re: tar, cpio, or cp?
> Does anyone know the best way to copy a huge directory tree (~1Gig) > to another disk (mounted at some point)? I need to preserve the > ownerships and permissions, preservation of times are optional. > > I am aware of 3 ways: > tar cpfl - dir1 | tar -C dir2 -xpf - > find dir1 -xdev -print | cpio -p -admu dir2 > cp -ax dir1 dir2 > > Which one is considered to be safer, faster, etc? > A technique that I use on a regular basis to copy from one partition to another is the following: ...say i want to copy my root directory to a new harddrive that I have now mounted on /mnt. I have a /home mount and a /usr mount and I don't want to touch those. one the dest. drive is mounted find / -xdev -depth -print | cpio -pvdumB /mnt It is quick, safe, keeps permissions, blah...blah! I have used it quite a bit! Hope it helps. --Jay Barbee -- TO UNSUBSCRIBE FROM THIS MAILING LIST: e-mail the word "unsubscribe" to [EMAIL PROTECTED] . Trouble? e-mail to [EMAIL PROTECTED] .
Re: tar, cpio, or cp?
I don't know if this works under Linux, but under Solaris we (egr)
have used dump to do this. I would try using dump of a filesystem
to another filesystem. I'm no authority on this... so please
dispute me if I'm crazy.
Thanks,
Dennis
--
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Division of Engineering Computing Services | page: 222.5875
On Fri, 21 Nov 1997, Alex Yukhimets wrote:
> Hi.
>
> Does anyone know the best way to copy a huge directory tree (~1Gig)
> to another disk (mounted at some point)? I need to preserve the
> ownerships and permissions, preservation of times are optional.
>
> I am aware of 3 ways:
> tar cpfl - dir1 | tar -C dir2 -xpf -
> find dir1 -xdev -print | cpio -p -admu dir2
> cp -ax dir1 dir2
>
> Which one is considered to be safer, faster, etc?
>
> thanks.
>
> Alex Y.
>
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>
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>
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Re: tar, cpio, or cp?
On Fri, 21 Nov 1997, Alex Yukhimets wrote: : Hi. : : Does anyone know the best way to copy a huge directory tree (~1Gig) : to another disk (mounted at some point)? I need to preserve the : ownerships and permissions, preservation of times are optional. : : I am aware of 3 ways: : tar cpfl - dir1 | tar -C dir2 -xpf - : find dir1 -xdev -print | cpio -p -admu dir2 : cp -ax dir1 dir2 : : Which one is considered to be safer, faster, etc? : : thanks. : : Alex Y. : FWIW, I prefer cpio as it (IMHO) does the best job of preserving permissions, and it doesn't throw up on device files and the like. However, this seems to be a topic similar to religion; last time we debated this there was quite a row. Not unlike debating vi/emacs/etc. ... -- Nathan Norman MidcoNet - 410 South Phillips Avenue - Sioux Falls, SD 57104 Voice: (605) 334-4454 Fax: (605) 335-1173 email: [EMAIL PROTECTED] or [EMAIL PROTECTED] PGP Key ID: 0xA33B86E9 - Public key available at keyservers PGP Key fingerprint: CE03 10AF 3281 1858 9D32 C2AB 936D C472 -- TO UNSUBSCRIBE FROM THIS MAILING LIST: e-mail the word "unsubscribe" to [EMAIL PROTECTED] . Trouble? e-mail to [EMAIL PROTECTED] .
tar, cpio, or cp?
Hi.
Does anyone know the best way to copy a huge directory tree (~1Gig)
to another disk (mounted at some point)? I need to preserve the
ownerships and permissions, preservation of times are optional.
I am aware of 3 ways:
tar cpfl - dir1 | tar -C dir2 -xpf -
find dir1 -xdev -print | cpio -p -admu dir2
cp -ax dir1 dir2
Which one is considered to be safer, faster, etc?
thanks.
Alex Y.
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