How to copy or move files without overwriting files of the same name?

For example:

mv --backup --suffix=.dsjjal.jpg /media/camera/dcim/100casio/cimg00* ~/Environment/Bilderalbum/Standardalbum.Inbox/;

for file in *.djjal.jpg; mv $file 2008-04-27.MTBing.${file/.djjal.jpg/.jpg};