--backup[=CONTROL]
make a backup of each existing destination file
-b like --backup but does not accept an argument
-f, --force
do not prompt before overwriting equivalent to --reply=yes
-i, --interactive
prompt before overwrite equivalent to --reply=query
--reply={yes,no,query}
specify how to handle the prompt about an existing destination
file
--strip-trailing-slashes remove any trailing slashes from each SOURCE
argument
-S, --suffix=SUFFIX
override the usual backup suffix
