Problems with rlogin and executing a script

[Lukas Schnieper]

Hi all

I work with Suse Linux 8.2 and Python 2.2.2
I'm trying to make a python script which makes a rlogin to another
system and executes there another script. So it looks like this:

os.system("rlog in <hostname>")
os.system("./myscript.py")

The rlogin is ok. I can give in my password and i'm on the other host.
But the script goes not on until i exit the rlogin. How can a execute a
command on the new machine on which i'm logged in?

[Dennis Lee Bieber]

Re: Problems with rlogin and executing a script

Lukas Schnieper fed this fish to the penguins on Wednesday 01 October
2003 12:59 am:
[color=blue]
>
> os.system("rlog in <hostname>")
> os.system("./myscript.py")
>[/color]
Won't work.

EACH os.system() call is the equivalent of opening a new command
interpreter window. So what you have is the first call doing the remote
login, and then exiting, followed by the second os.system() creating a
new environment and trying to execute locally.
[color=blue]
> The rlogin is ok. I can give in my password and i'm on the other host.
> But the script goes not on until i exit the rlogin. How can a execute
> a command on the new machine on which i'm logged in?
>[/color]
Check the various popen family. Though you may have to write the
entire sequence first before you can read the returns...

--[color=blue]
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[Richard]

Re: Problems with rlogin and executing a script

Lukas Schnieper <schnieper@sema for.ch> wrote in message news:<mailman.1 064994842.25014 .python-list@python.org >...[color=blue]
> Hi all
>
> I work with Suse Linux 8.2 and Python 2.2.2
> I'm trying to make a python script which makes a rlogin to another
> system and executes there another script. So it looks like this:
>
> os.system("rlog in <hostname>")
> os.system("./myscript.py")
>
> The rlogin is ok. I can give in my password and i'm on the other host.
> But the script goes not on until i exit the rlogin. How can a execute a
> command on the new machine on which i'm logged in?[/color]

It looks like your calling myscript.py from your local system, not the
remote system. You should probably try the Pexpect module (
http://pexpect.sourceforge.net/ ), which will let you control a
command line program like rlogin or ssh.