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28 .\" @(#)rexec.3 8.1 (Berkeley) 6/4/93
36 .Nd return stream to a remote command
41 .Fn rexec "char **ahost" "int inport" "char *user" "char *passwd" "char *cmd" "int *fd2p"
44 This interface is obsoleted by
55 returning \-1 if the host does not exist.
58 is set to the standard name of the host.
59 If a username and password are both specified, then these
60 are used to authenticate to the foreign host; otherwise
61 the environment and then the user's
64 home directory are searched for appropriate information.
65 If all this fails, the user is prompted for the information.
69 specifies which well-known
71 Internet port to use for
72 the connection; the call
73 .Fn getservbyname \*qexec\*q \*qtcp\*q
76 will return a pointer to a structure, which contains the
78 The protocol for connection is described in detail in
81 If the connection succeeds,
82 a socket in the Internet domain of type
85 the caller, and given to the remote command as
91 is non-zero, then an auxiliary channel to a control
92 process will be setup, and a descriptor for it will be placed
95 The control process will return diagnostic
96 output from the command (unit 2) on this channel, and will also
97 accept bytes on this channel as being
100 forwarded to the process group of the command.
102 information returned does not include remote authorization failure,
103 as the secondary connection is set up after authorization has been
109 (unit 2 of the remote
110 command) will be made the same as the
113 provision is made for sending arbitrary signals to the remote process,
114 although you may be able to get its attention by using out-of-band data.
126 function sends the unencrypted password across the network.
128 The underlying service is considered a big security hole and therefore
129 not enabled on many sites, see