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RCMDSH(3)                               BSD Library Functions Manual                               RCMDSH(3)

NAME
     rcmdsh -- return a stream to a remote command without superuser

SYNOPSIS
     #include <unistd.h>

     int
     rcmdsh(char **ahost, int inport, const char *locuser, const char *remuser, const char *cmd,
         const char *rshprog);

DESCRIPTION
     The rcmdsh() function is used by normal users to execute a command on a remote machine using an authen-tication authentication
     tication scheme based on reserved port numbers using rshd(8) or the value of rshprog (if non-NULL).

     The rcmdsh() 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 and a connection is established to
     a server residing at the well-known Internet port ``shell/tcp'' (or whatever port is used by rshprog).
     The parameter inport is ignored; it is only included to provide an interface similar to rcmd(3).

     If the connection succeeds, a socket in the UNIX domain of type SOCK_STREAM is returned to the caller,
     and given to the remote command as stdin, stdout, and stderr.

RETURN VALUES
     The rcmdsh() function returns a valid socket descriptor on success.  Otherwise, -1 is returned and a
     diagnostic message is printed on the standard error.

SEE ALSO
     rsh(1), socketpair(2), rcmd(3), rshd(8)

BUGS
     If rsh(1) encounters an error, a file descriptor is still returned instead of -1.

HISTORY
     The rcmdsh() function first appeared in OpenBSD 2.0, and made its way into FreeBSD 5.0.

BSD                                           September 1, 1996                                          BSD