🚀 go-pugleaf

|>I want to move the /usr to another partition, how can I do it?
|>I've already prepare the partition for /usr but I don't know
|>how to do then.
|
|You need to duplicate your entire /usr tree onto the new drive.
|
|First, amount the new drive into some convenient location, such as
|/mnt:
|
|  mount -t <type> /dev/?d?? /mnt
|
|Then do the following to completely duplicate the directory tree:
|
|(cd /usr; tar cf - . ) | (cd /mnt; tar xvf -)
|
|The effect is to run tar twice in a pipe, the sending end creating
|an archive into the pipe starting at /usr, and the receiver grabbing
|data from the pipe and unpacking it into /mnt.

That's excellent advice and I would add this:

(cd /usr; tar cf - . ) | (cd /mnt; tar xvpf -)

The p flag says retain original mode of the files.  Otherwise you get
whatever mode results from the current umask.

I've also read that cp -A (GNU cp) or something like that will also do
the job but never tried it myself.