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Annotation of researchv10dc/man/adm/man1/dcon.1, revision 1.1

1.1     ! root        1: .TH DCON 1
        !             2: .CT 1 comm_mach
        !             3: .SH NAME
        !             4: dcon, ndcon, rlogin, nrx, rsh, scriptcon \- remote login and execution
        !             5: .SH SYNOPSIS
        !             6: .B dcon
        !             7: [
        !             8: .I option ...
        !             9: ]
        !            10: .I machine
        !            11: .PP
        !            12: .B ndcon
        !            13: .I machine
        !            14: .PP
        !            15: .B rlogin
        !            16: .I machine
        !            17: .PP
        !            18: .B nrx
        !            19: .I machine
        !            20: [
        !            21: .I command-word ...
        !            22: ]
        !            23: .PP
        !            24: .B rsh
        !            25: [
        !            26: .I option ...
        !            27: ]
        !            28: .I machine
        !            29: [
        !            30: .I command-word ...
        !            31: ]
        !            32: .PP
        !            33: .B scriptcon
        !            34: .I machine script
        !            35: .SH DESCRIPTION
        !            36: Do not read this page unless you are familiar with
        !            37: .IR con (1).
        !            38: .PP
        !            39: .I Dcon,
        !            40: .I ndcon,
        !            41: and
        !            42: .I rlogin
        !            43: are analogs (or special cases) of
        !            44: .IR con (1)
        !            45: for specific kinds of network connection.
        !            46: They support the same local escape convention with the quit signal.
        !            47: .PP
        !            48: Similarly,
        !            49: .I nrx
        !            50: and
        !            51: .I rsh
        !            52: are analogs of
        !            53: .IR rx.
        !            54: .PP
        !            55: Network addresses are as in
        !            56: .IR con (1).
        !            57: The default networks for the various commands are
        !            58: .TP "\w'dcon, ndcon, nrx  'u
        !            59: .I dcon, ndcon, nrx
        !            60: .B dk
        !            61: .TP
        !            62: .I rlogin, rsh
        !            63: .B tcp
        !            64: .PP
        !            65: .I Dcon
        !            66: connects to the remote machine, and attempts
        !            67: automatically to log in under
        !            68: the login id of the invoking user.
        !            69: Option
        !            70: .BR -l 
        !            71: turns off automatic login; the remote machine will ask
        !            72: for a login id and password.
        !            73: .PP
        !            74: .I Ndcon
        !            75: behaves like
        !            76: .I dcon
        !            77: but provides a more transparent 
        !            78: transport protocol.
        !            79: In particular terminal line disciplines are preserved
        !            80: and it is possible to download into a
        !            81: .IR mux (9.1)
        !            82: window across an
        !            83: .I ndcon
        !            84: connection.
        !            85: .PP
        !            86: .I Rlogin
        !            87: is like
        !            88: .IR dcon ,
        !            89: but uses the connection protocol
        !            90: found on Berkeley systems.
        !            91: .PP
        !            92: .I Rx
        !            93: (see
        !            94: .IR con (1))
        !            95: executes one shell command on the remote machine
        !            96: as if logged in there,
        !            97: with local standard input and output.
        !            98: It uses a connection protocol specific to Research machines.
        !            99: .PP
        !           100: .I Nrx
        !           101: is to 
        !           102: .I rx
        !           103: as
        !           104: .I ndcon
        !           105: is to
        !           106: .IR dcon :
        !           107: it runs a command
        !           108: remotely with line discipline preserved.
        !           109: .PP
        !           110: .I Rsh
        !           111: is to
        !           112: .I rx
        !           113: as
        !           114: .I rlogin
        !           115: is to
        !           116: .IR dcon :
        !           117: it runs a command remotely using the Berkeley execution protocol.
        !           118: .PP
        !           119: .I Scriptcon
        !           120: provides a connection like
        !           121: .BR "dcon \-l" ,
        !           122: except that the login and other initial protocol are
        !           123: controlled by a
        !           124: .I script
        !           125: file.
        !           126: The first line of the file gives a string (e.g.\&
        !           127: .LR login: )
        !           128: expected from the
        !           129: remote machine; the second gives the local response, and
        !           130: so on in alternation.
        !           131: Unrecognized data from the remote machine are ignored.
        !           132: Warning: a script that contains a password
        !           133: may compromise the security of the remote system, hence
        !           134: .I scriptcon
        !           135: should be used only for restricted logins.
        !           136: .PP
        !           137: .I Con
        !           138: tries to connect using the protocol of
        !           139: .IR ndcon ;
        !           140: if that fails,
        !           141: it tries that of
        !           142: .IR dcon ,
        !           143: then that of
        !           144: .IR rlogin .
        !           145: .I Rx
        !           146: attempts its own style of connection;
        !           147: if that fails,
        !           148: it tries that of
        !           149: .IR rsh .
        !           150: .SH "SEE ALSO"
        !           151: .IR con (1),
        !           152: .IR dkmgr (8),
        !           153: .IR svcmgr (8),
        !           154: .IR tcpmgr (8),
        !           155: .IR ipc (3)
        !           156: .br
        !           157: D. L. Presotto,
        !           158: `Interprocess Communication in the Eighth Edition
        !           159: .SM UNIX
        !           160: System',
        !           161: this manual, Volume\ 2
        !           162: .SH BUGS
        !           163: If a program run by
        !           164: .I nrx
        !           165: won't let go, for example by ignoring
        !           166: signals, there is no way of getting out short of hanging up.
        !           167: .br
        !           168: There is no error correction or retry in a
        !           169: .I scriptcon
        !           170: script.

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