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Need help with serial port

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Top Forums Shell Programming and Scripting Need help with serial port
# 1  
Old 07-12-2010
Need help with serial port
Hi,

I have a external board connected to my serial port. I need to execute "shutdown -r now" command when system boot up. When system boots up it requires a username ans password. Then I need to run my command. I can use rc script but that is rebooting system before it asks for username and password. The command should
1. first give username to the device
2. secondly, it should give password
3. finally it should give "shutdown -r now" command to the board.

This script can run on the host PC and need to log the botting and rebooting messages.

Is it possible to write script on host PC to do it. I am trying to send command as data over serial but its simply echoes on the board but does execute. Please help. __________________
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LEARN ABOUT FREEBSD

uhsoctl

UHSOCTL(1)						    BSD General Commands Manual 						UHSOCTL(1)

NAME

     uhsoctl -- connection utility for Option based devices

SYNOPSIS

     uhsoctl [-a apn] [-c cid] [-p pin] [-u username] [-k password] [-r path] [-f path] [-b | -n] interface
     uhsoctl -d interface
     uhsoctl -h

DESCRIPTION

     uhsoctl is a small connection utility for Option N.V. devices that are based on Options packet interface and uses proprietary AT_* calls to
     establish connections.  The utility (tries to) configure both default route and name servers (/etc/resolv.conf).

     By default uhsoctl detaches from the terminal upon on a successful connection, a few command-line options exists that allows this behavior to
     be changed.

     uhsoctl attempts to find a usable controlling serial port based on the provided network interface.  If this fails you might specify a serial
     port manually.

OPTIONS

     -a apn
	   Specify APN to connect to.

     -c cid
	   Specify CID (Context ID) to use, by default CID 1 is used.  If an APN has been configured once, it's enough to specify the CID used for
	   further accesses.

     -p pin
	   Specify SIM PIN.

     -u username
	   Specify username.

     -k password
	   Specify username.

     -r path
	   Path to resolv.conf, default /etc/resolv.conf.  Use /dev/null to disable updating of name servers.

     -f path
	   Explicitly set the serial port to use as controlling terminal.  Might be needed if the automatic detection fails.

     -b    Fork into background directly, before a connection has been established.

     -n    Never fork into background, run entirely in foreground.

EXAMPLES

     Connect to ``apn.example.com'' on interface ``uhso0'' and use PIN ``1234'' to enable the SIM card.
	   uhsoctl -a apn.example.com -p 1234 uhso0

     Disconnect from a previously established connection.
	   uhsoctl -d uhso0

SEE ALSO

     uhso(4)

BSD
								   Aug 12, 2009 							       BSD