The UNIX R Commands

Configuring the r Commands

There are a number of commands for executing commands on remote hosts. These are rlogin, rsh, rcp and rcmd. They all spawn a shell on the remote host and allow the user to execute commands. Of course, the client needs to have an account on the host where the command is to be executed. Thus all these commands perform an authorization procedure. Usually, the client will tell the user's login name to the server, which in turn requests a password that is validated in the usual way.

                #
                # /etc/rpc - miscellaneous RPC-based services
                #
                portmapper      100000  portmap sunrpc
                rstatd          100001  rstat rstat svc rup perfmeter
                rusersd         100002  rusers
                nfs             100003  nfsprog
                ypserv          100004  ypprog
                mountd          100005  mount showmount
                ypbind          100007
                walld           100008  rwall shutdown
                yppasswdd       100009  yppasswd
                bootparam       100026