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List:       busybox
Subject:    cp: implement --update and --remove-destination?
From:       shen long <wdlkmpx () gmail ! com>
Date:       2016-05-18 3:43:09
Message-ID: CADm8ZdW092sMYqO5+ohB4SiS-CpmQLtuG0zuazN9F_bHhg9jnw () mail ! gmail ! com
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How about implementing these 2 options?

--remove-destination
deletes the actual file before writing the new contents, this is useful for
gnu cp, as it follows symlinks by default...overwriting a symlink equals to
overwriting the file it points to... bad.

Although gnu cp and busybox cp behave differently from what i can tell

-u, --update
overwrites the target file only if the source is newer... i guess this
has to with
"modified time"?

Well, it makes sense when copying many files or directories
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