RLOGIN(1N) COMMAND REFERENCE RLOGIN(1N) NAME rlogin - remote login SYNOPSIS rlogin rhostname[ -ec ] [ -l username ] [ -8 ] [ -L ] [ -w ] rhost [ -ec ] [ -l username ] [ -8 ] [ -L ] [ -w ] DESCRIPTION The rlogin command connects your terminal on the current local host system to the remote host, rhostname. Each host has a file /etc/hosts.equiv (see hosts.equiv(5N)) which contains a list of host names which are 'trusted' enough that their users are allowed to run programs on the local system (see rsh(1N)), copy files between the local and remote sytems (see rcp(1N)), and login to the local system, all without the use of passwords. Each user may also have a private equivalence list in a file .rhosts in his or her login directory. Each line in this file should contain an rhost and a username separated by a space, giving additional cases where logins without passwords are to be permitted. If the originating user is not not listed in /etc/hosts.equiv or the appropriate .rhosts file, then a login and password will be prompted for on the remote machine as in login(1). To avoid some security problems, the .rhosts file must be owned by either the remote user or root and may not be a symbolic link. If there is no home directory for the user on the remote system, rlogin will print Sorry, home directory required and will prompt for another login. The second form of invoking rlogin is possible if you place a symbolic link (in some directory in your search path) linking rhostname to /bin/rsh. (See ln(1).) This works because rsh can inspect its invocation, and if it finds only a host name, rsh assumes you want to login. Your remote terminal type is the same as your local terminal type (as given in your environment TERM variable). All echoing takes place at the remote site, so that (except for delays) the rlogin is transparent. Flow control, via Ctrl S and Ctrl Q and flushing of input and output on interrupts, are handled properly. A line of the form: <RETURN> <TILDE> <DOT> <RETURN> disconnects from the remote host, where tilde (~) is the escape character. A different escape character may be specified by the -e option. Printed 5/12/88 1
RLOGIN(1N) COMMAND REFERENCE RLOGIN(1N) If you are a csh(1) user, you can suspend a remote login by using either: <RETURN> <TILDE> <CTRL-Z> <RETURN> or <RETURN> <TILDE> <CTRL-Y> <RETURN>. The first invocation stops all output until you bring the rlogin job into the foreground, the second invocation will not stop output. However, if you want the output from a suspended rlogin (or any other suspended job, for that matter) not to be held up, you must also turn off the stty(1) option tostop, i.e. stty -tostop. Typically you would place that stty option in your .login file. Note that you can have a whole chain of rlogin's and selectively suspend to any previous one. Suppose you logged into machine able, and from there used rlogin to access the machine baker, and from there you used rlogin to access the machine charlie. If you are currently on the machine charlie and want to suspend that job and return to the machine able, you could type: <RETURN> <TILDE> <CTRL-Z> <RETURN> you could also elect to suspend your charlie rlogin and return to baker by typing: <RETURN> <TILDE> <TILDE> <CTRL-Z> <RETURN> Having said this it should be noted that it is much more efficient to rlogin direct to a host, rather than set up a chain of rlogins. OPTIONS -ec Set the escape character to the character c. There is no space separating this option flag and the argument character. -l username Specify the login username to login as you would on the remote host. -8 Set rlogin to transparently handle 8 bit characters. You lose flow control with this option (Ctrl S and Ctrl Q) but you gain the ability to transfer 8 bit data. Typically this would be useful if your terminal sends 8 bit graphical data in response to some command from the host. -L Allows the rlogin session to be run in litout mode. Printed 5/12/88 2
RLOGIN(1N) COMMAND REFERENCE RLOGIN(1N) -w Force rlogin to exchange window size information. Normally, this occurs automatically, but some 4.3 systems have a bug that inhibit the necessary out of band communications from occurring reliably. In these cases, this switch cause the data to be exchanged. EXAMPLES This example illustrates how to rlogin to another user's account (in this case, sheryl's) on remote host engr1: rlogin engr1 -l sheryl If there was an entry in the .rhosts file in sheryl's home directory for the user attempting the rlogin, then no password would be required. FILES /usr/hosts/* for the rhost version of the command RETURN VALUE [3] Remote process has died. Connection is closed. [USAGE] Incorrect command line syntax. Execution terminated. [NP_WARN] An error warranting a warning message occurred. Execution continues. [NP_ERR] An error occurred that was not a system error. Execution terminated. [P_ERR] A system error occurred. Execution terminated. See intro(2) for more information on system errors. [P_WARN] A system error occurred. Execution continues. See intro(2) for more information on system errors. CAVEATS More terminal characteristics should be propagated. SEE ALSO rsh(1N), hosts.equiv(5N), and .rhosts(5N). Printed 5/12/88 3
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