| Date: Fri, 21 Jun 2002 23:55:57 +0100
| From: Niall O Broin <niall at linux.ie>
| On Fri, Jun 21, 2002 at 06:50:59PM +0100, Tom Mackey wrote:
| > The disc in my Linux machine is almost full and I would like
| > to replace it with a larger one. [ ... ]
I'm slightly curious, why _replace_ rather than _add_?
(of course, adding assumes you've got the slots/whatever.)
and then, if adding, why move everything from the current
to the new disc?
|[ ... ]
| The following step by step instructions
|[ ... ]
| find .|cpio -pmd /tmp/new 
eeek! above works, as long as there's nothing "funny" about
what's being copied. but if there are either:
· strange filenames, esp. ones containing a newline;
· read-only directories, i.e. ones with no write
permission at all (may not apply to superuser);
...the above stands a good change of f**king up.
better, when using GNU find(1) and GNU cpio(1), is:
chmod 700 /tmp/new
find . -depth -print0 | cpio -0pmd /tmp/new
this will correctly duplicate all files, regardless of the
names; and all directories, regardless of the permissions.
the `chmod 700' is to close a security hole inadvertently
created by fixing the directory permissions issue.
whilst perhaps un-necessary in this situation, you may also
wish to consider using `cpio's `-a' option in addition to
those shown above.
|[ ... ]
|  cp -a . /tmp/new is probably just fine too - I've just been
| using find|cpio since forever and it works on any Unix [ ... ]
yea. what does `cp -a' do w.r.t. special files, FIFOs,
and so forth? for those, the i-node attributes should be
duplicated, but the device/FIFO/whatever _never_ open(2)ed
or read(2) --- which is not exactly `cp's purpose?
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