[uml-user] Problem scripting pty console

[Richard T. <rj...@th...>]

Hi

I am trying to script a communication with a UML. The UML has a console on a 
pty using 'con1=tty:/dev/ptyz0' on the command line.

The problem I am having is that my script works once and only once. I open the 
pty, read and write to it and then close it fine. But if I reopen the pty 
there is no getty running on the other end, so no login prompt. Is there 
something that I need to do to 'reset' the console/pty so that a new getty is 
spawned?

The script is really simple, so here it is:

	import os
	import pexpect

	fd = os.open("/dev/ttyz0", os.O_RDWR|os.O_NONBLOCK|os.O_NOCTTY)
	m = pexpect.spawn(fd)
	m.send('\r\n')
	m.expect('login:')
	m.send('root\n')
	m.expect('Password:')
	m.send('mypasswd\n')
	m.expect('root #')
	m.send('ls /\n')
	m.expect('root #')
	m.send('exit\n')
	os.close(fd)

Any pointers would be much appreciated.

Richard



-- 
You can normally find me on Jabber as Ric...@ja...