Slackware Book Online book about slackware linux distribution with good tip's for command line ( aka shell ).
DRBL DRBL provides diskless or systemless environment. It uses distributed hardware resources and makes it possible for clients to fully access local hardware. It also includes Clonezilla, a partition and disk cloning utility similar to Ghost. It works on Debian, Ubuntu, Mandriva, Red Hat, Fedora, CentOS and SuSE.