Great Book! This and the box set are a pleasant suprise to all who already use Debian Gnu/Linux! This will be wonderful addition to Debian and Linux as a whole. (Aside to charles who posted Reader Review dated oct 12, RTFM!! As in any Linux, users can belong to many groups. as root you can do this: root@your.computer> usermod -G dialout username Also- man usermod(8).) --ptw--