Re: Duplicating a file system

Drew Sullivan (drew@eros.ss.org)
Sun, 10 Mar 1996 12:44:01 -0500

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In message <Pine.LNX.3.91.960309093124.145A-100000@marvin.mars.org>, Bill Power
s writes:
> On Fri, 8 Mar 1996, Joel Young wrote:
>
> This will also work: Assuming the partitions are mounted as /From/Dir and
> /To/Dir:
>
> (cd /From/Dir ; tar cf - . ) | (cd /To/Dir ; tar xvfp - )

***NEVER*** do this use this instead:
umask 0 # tar honours umask
(cd /From/Dir && tar clf - . ) | (cd /To/Dir && tar xpf - )
^^ ^^
Note the double &&. If the cd fails then the tar doesn't run.
Otherwise you have the potential of mangling either the source tree
or the destination tree.

-- 
  -- Drew Sullivan, <drew@ss.org> -- Toronto, Canada,  +1-416-225-1592
         "Intel Inside" isn't advertising.  It's a warning!

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