For more information, type:
$ mbox2mh --help
This shows you following:
Usage: mbox2mh [-h | --help] [-i | --interactive] [-r | --recursive] SOURCE DESTINATION Imports MBOX mail files from SOURCE where SOURCE can be a file or a directory and imports them as MH mails and directories into the DESTINATION directory. If DESTINATION does not exist, mbox2mh tries to create it. DESTINATION can also be an existing MH directory which is already in use. Options: -i, --interactive ask for every mbox file to import -r, --recursive include subdirectories in SOURCE -h, --help display this help and exit Report bugs to vale@canada.com