Move file to another user's home directory (without sudo)?

Question

I have a couple of files that I want to move to another's user home directory. I don't have permissions to write to that user's home directory, but I know his password.

I know how to copy the file using scp (see here). However, if I want to move the file, copying and then removing the original file is inefficient. Is there a way to move the file, without using sudo (I don't know the root's password)?

Answer 1

Subject to certain assumptions that the target user can actually access the file in its original location, the following approach could work:

SRC='/path/to/existing/file'
DST='/path/to/new/file'

su target_user sh -c "ln -f '$SRC' '$DST'" && rm -f "$SRC"

This "moves" the file to the new user's location, but does not change the ownership or permissions.

Answer 2

You can su to any user, if you know there password. (for sudo you need to be a sudoer, and know your own password).

So make the files readable and directory writeable(for deletion) by the other user, add files to a shared group, or use access-control-lists (ACLs) setfacl (What are the different ways to set file permissions etc on gnu/linux)

Then su other user Then do the move.

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Also look at @roaima 's answer for how to do it without giving write access away to receiving user.