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28 .\" from: @(#)rexec.3 8.1 (Berkeley) 6/4/93
29 .\" $NetBSD: rexec.3,v 1.12 2003/05/14 12:11:03 wiz Exp $
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
46 It is available from the compatibility library, libcompat.
51 function looks up the host
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
63 file in his home directory are searched for appropriate information.
64 If all this fails, the user is prompted for the information.
68 specifies which well-known
70 Internet port to use for the connection; the call
71 .Ql getservbyname(\\*qexec\\*q, \\*qtcp\\*q)
74 will return a pointer to a structure, which contains the
76 The protocol for connection is described in detail in
79 If the connection succeeds, a socket in the Internet domain of type
81 is returned to the caller, and given to the remote command as
87 is non-zero, then an auxiliary channel to a control
88 process will be set up, and a descriptor for it will be placed
91 The control process will return diagnostic
92 output from the command (unit 2) on this channel, and will also
93 accept bytes on this channel as being
95 signal numbers, to be forwarded to the process group of the command.
96 The diagnostic information returned does not include remote authorization
97 failure, as the secondary connection is set up after authorization has been
103 (unit 2 of the remote command) will be made the same as the
106 provision is made for sending arbitrary signals to the remote process,
107 although you may be able to get its attention by using out-of-band data.