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NetBSD 6.1.5 - man page for rexec (netbsd section 3)

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REXEC(3)			   BSD Library Functions Manual 			 REXEC(3)

NAME
     rexec -- return stream to a remote command

LIBRARY
     Compatibility Library (libcompat, -lcompat)

SYNOPSIS
     int
     rexec(char **ahost, int inport, char *user, char *passwd, char *cmd, int *fd2p);

DESCRIPTION
     This interface is obsoleted by rcmd(3).  It is available from the compatibility library,
     libcompat.

     The rexec() function looks up the host *ahost using gethostbyname(3), returning -1 if the
     host does not exist.  Otherwise *ahost is set to the standard name of the host.  If a user-
     name and password are both specified, then these are used to authenticate to the foreign
     host; otherwise the environment and then the user's .netrc file in his home directory are
     searched for appropriate information.  If all this fails, the user is prompted for the
     information.

     The port inport specifies which well-known DARPA Internet port to use for the connection;
     the call 'getservbyname("exec", "tcp")' (see getservent(3)) will return a pointer to a
     structure, which contains the necessary port.  The protocol for connection is described in
     detail in rexecd(8).

     If the connection succeeds, a socket in the Internet domain of type SOCK_STREAM is returned
     to the caller, and given to the remote command as stdin and stdout.  If fd2p is non-zero,
     then an auxiliary channel to a control process will be set up, and a descriptor for it will
     be placed in *fd2p.  The control process will return diagnostic output from the command
     (unit 2) on this channel, and will also accept bytes on this channel as being UNIX signal
     numbers, to be forwarded to the process group of the command.  The diagnostic information
     returned does not include remote authorization failure, as the secondary connection is set
     up after authorization has been verified.	If fd2p is 0, then the stderr (unit 2 of the
     remote command) will be made the same as the stdout and no provision is made for sending
     arbitrary signals to the remote process, although you may be able to get its attention by
     using out-of-band data.

SEE ALSO
     rcmd(3), rexecd(8)

HISTORY
     The rexec() function appeared in 4.2BSD.

BSD					   June 4, 1993 				      BSD
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