radÂ·iÂ·cal. (rÄdâ²Ä­-kÉl) adj. 1. Arising from or going to a root or source; basic: proposed a radical solution to the problem. 2. Departing markedly from the usual or customary; extreme or drastic: a radical change in diet.
rlogin (remote login) 1  Securing VMware Virtual Infrastructure with Centrify's Identity and Access  ... Rlogin (remote login) is a UNIX command that allows an authorized user to login to other UNIX machines (hosts) on a network and to interact as if the user were physically at the host computer.
This is rare, and the login protocol proceeds over standard input and output, not with the user as a command-line option. Newer versions of rlogin establish the connection, allocate pseudo-ttys, and then do the rlogin protocol. If the remote user is authenticated, rlogin calls login with exec, so each token is one argument, never more: