The default action for dragging and dropping files between the GNOME File
Manager and the desktop is to move them. But you can also use drag and drop
to copy a file by pressing the SHIFT key while dragging the
file(s). You can also drag a file within the file manager to another
directory. Select the file in the main window and drag it to the desired
directory in the tree window. Note, however, that when dragging to the tree
window the default action is to copy the file. As you drag the file to the
tree window, you will see a plus sign appear to remind you that the file
will be copied. You can also use drag and drop to copy directories the same
way as you did for files. Again note the plus sign signifying that the
directory will be copied not moved
You may also bring up a menu which lets you decide what action to perform
with a drag by using the middle mouse button to drag a file or pressing the
ALT Key while dragging a file. Once you release the drag
you will get a pop-up menu which contains the options Copy, Move, Link, and
Cancel Drag.
To use the move dialog you simply type in the path where you wish to move
the file. If you want to rename the file you may type the new name of the
file in the path string. The Copy dialog looks and works exactly the same
way as the Move/rename dialog.
If the file you are moving is a symbolic link — that is, a virtual
link to where the file actually resides (called a shortcut in some other
operating systems) — you may select the Advanced
Options tab and select Preserve symlinks.
Selecting this will make sure the link is preserved despite the move.
It is recommended that you use this method of moving a symbolic link.