[OS X TeX] Copying gwTeX
Piet van Oostrum
piet at cs.uu.nl
Tue Sep 27 11:04:46 CEST 2005
>>>>> Aaron Jackson <jackson at msrce.howard.edu> (AJ) wrote:
>AJ> To be more exact, in general the tar command should be:
>AJ> tar cfz - ./local | ssh machine 'cd <target dir>; tar xpfz -'
>AJ> note the ``p'' in the second tar preserves the owner and group information
>AJ> along with the file modes, which might be critical depending on who owns
>AJ> the files. Not including it has bitten be in the past. One additional
>AJ> problem is that both machines need to have the same user owner and group
Man tar says about the extract operation:
The owner, modification time, and file permissions are restored, if
Group is also restored although this isn't explicitely stated. So I
think -p doesn't add anything. But it shouldn't harm either.
But when copying system files, like /usr/local, the extract operation
should run as root, otherwise the owner is not restored. One way to do this
is to use sudo at the ssh side.
tar cfz - ./local | ssh machine 'cd <target dir>; sudo tar xpfz -'
Piet van Oostrum <piet at cs.uu.nl>
URL: http://www.cs.uu.nl/~piet [PGP 8DAE142BE17999C4]
Private email: piet at vanoostrum.org
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