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bug#23120: cp with --dereference (-L) and --link (-l) or --symbolic-link

From: Pádraig Brady
Subject: bug#23120: cp with --dereference (-L) and --link (-l) or --symbolic-link (-s)
Date: Sat, 26 Mar 2016 17:26:36 +0000
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.3.0

unarchive 15173

On 26/03/16 10:36, Petr Skočík wrote:

I'm on a system with cp 8.21, and when I do `cp -Ll` or `cp -Ls` on a
symlink, it hardlinks (-Ll) or symlinks (-Ls) the symlink instead of the
target of the symlink.

It behaves the same on single files and trees (with `-r`).

I think the logical thing to do would be for to `cp` to symlink or
hardlink the symlink target in these cases.

What do you think?

Best regards,

My particular use case is that I'd like to turn a part of an augmented
tree of symlinks (created with `cp -s` + additional file creation on top
of that) into a tree of hardlinks to the sources.

The -Ll hardlink case was fixed in 8.22 with a bit of
an epic discussion in http://bugs.gnu.org/15173

The -Ls symlink case currently just symlinks the source symlink.
To link the target you'd have to do similar processing to that
done in `ln -r` and `realpath ...`.  I've not thought about it
enough to know if it was a good idea to add to cp.
There may be enough options for symlink handling to keep
those options in separate tools like discussed in the
--relative option description in the ln manual:


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