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Annotation of researchv10dc/man/adm/man1/dcon.1, revision 1.1.1.1

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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