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]

Lukas Schnieper fed this fish to the penguins on Wednesday 01 October
2003 12:59 am:

os.system("rlog in <hostname>")
os.system("./myscript.py")
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.
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?
Check the various popen family. Though you may have to write the
entire sequence first before you can read the returns...

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[Richard]

Lukas Schnieper <sc*******@sema for.ch> wrote in message news:<ma******* *************** ************@py thon.org>...

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?

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.