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