i'm reading through the samba howto. section 6.2.3 (page 105) shows the add machine script as follows: add machine script = /usr/sbin/useradd -d /var/lib/nobody -g 100 -s /bin/false -M %u i have a problem with the -M option. i cannot find this option in useradd's man page. can i assume this example is incorrect?? what would be a correct example???