mren --version (return code: 0)
mren (GNU mtools) 4.0.18
configured with the following options: enable-xdf disable-vold disable-new-vold disable-debug enable-raw-term
mren --help (return code: 0)
Mtools version 4.0.18, dated January 9th, 2013
Usage: mren [-vV] [-D clash_option] file targetfile
mren [-vV] [-D clash_option] file [files...] target_directory