setport(1M)                                           setport(1M)



NAME
     setport - sets the characteristics of a serial port

SYNOPSIS
     setport -o [-s baud-rate] tty...

     setport -r [-s baud-rate] tty...

ARGUMENTS
     -o   Sets the port to off, which disables login sessions on
          the port.

     -r   Sets the port to respawn, which enables login sessions
          on the port.

     -s baud-rate
          Specifies the baud rate.  The default is 9600; 1200 is
          a common value for modems.  See termio(7) for a list of
          valid baud rates.  Note that if you run setport on an
          existing entry in /etc/inittab and you do not specify
          this option, setport changes the baud rate to 9600.

     tty  Specifies the name of an existing serial-port device
          file in /dev.  The value of tty can be the absolute
          pathname of the device file, such as /dev/ttyXX, or the
          name of the device file, such as ttyXX.  See mknod(1M)
          for details about creating device files.

DESCRIPTION
     setport adds or modifies entries for serial ports in
     /etc/inittab.  If you specify a serial port that does not
     exist in /etc/inittab, setport creates the entry and sets
     the port to enable or disable login sessions, as desired.

     Because setport can create entries in /etc/inittab, you can
     call setport from a device-initialization script, which is
     called by /etc/autoconfig.  If you call setport from a
     device-initialization script, make sure that a device file
     of the name specified by tty exists in /dev before setport
     is called.

     The setport command automatically runs init q, which causes
     the changes to take effect immediately.

EXAMPLES
     The following command enables login sessions on /dev/tty0,
     the modem port, with a baud rate of 19200:

        setport -r -s 19200 tty0

     Here is the result in /etc/inittab:




January 1992                                                    1

setport(1M)                                           setport(1M)



        00:2:respawn:/etc/getty tty0 at_19200


NOTES
     The setport command supersedes an earlier program, tty_add,
     and should be used in place of tty_add.

FILES
     /dev/*
          Device files
     /etc/inittab
          File that setport updates
     /etc/setport
          Executable file

SEE ALSO
     autoconfig(1M), init(1M), mknod(1M), tty_add(1M)

     inittab(4) in A/UX Programmer's Reference




































2                                                    January 1992