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Full Discussion: how to detect port open status?
Top Forums Shell Programming and Scripting how to detect port open status? Post 302419320 by rdcwayx on Thursday 6th of May 2010 10:34:05 PM
Old 05-06-2010
how to detect port open status?
I write a script which will stop an application, then restart it.

Sometimes it is succesful, sometimes not.

The problem is, when stop the application, some ports are still listenning (or not released). When start the application, it reports that ports are used, and can't continues.

I use
Code:
"Sleep 60"

to delay the start job, but seems somtime I need wait for more than 5 minutes to release the ports.

Are there any way to detect the ports, and wait until the ports are all released?

My env is Solaris 10.
 

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LEARN ABOUT OSF1

iscc

iscc(7) 						 Miscellaneous Information Manual						   iscc(7)

NAME

       iscc - serial communications interface

SYNOPSIS

       controller  iscc0  at  isa0

DESCRIPTION

       An  onboard  Zilog  8530  DUART	provides  AXPvme-based Single Board Computers with console (CON) and auxiliary (AUX) serial communications
       ports.  Both serial communications ports can operate at baud rates from B50 to B38400,  excluding B134 (see tty(7)).

       On AXPvme Single Board Computers configured with a graphics head as the system console, the CON serial communications port (/dev/tty01)	is
       available for use by application programs as an additional communications port.

       In  the	absence  of a graphics head, the CON serial communications port (/dev/console) becomes the system console. When used as the serial
       system console, the CON serial communications port always operates at 9600 BPS, 8-bits, and no parity.

       Regardless of system console, the AUX serial communications port (/dev/tty00) is always available for use by application programs.

RESTRICTIONS

       Data communications equipment attached to the CON serial communications port must be set to 9600 BPS, 8-bits, no parity when configured	as
       the serial system console. The iscc terminal driver enforces this restriction.

       No modem control is supported for either the CON or AUX serial communications ports.

FILES

       console terminal local terminal local terminal

RELATED INFORMATION

       console(7), devio(7), tty(7), MAKEDEV(8) delim off

																	   iscc(7)
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