Pexpect: SSH, Command and Password

[Gil_H]

Hi,

I'm trying to run a script over unix on a remote machine.
In order to automate it, the procedure requests the following:
1. Using SSH connection.
2. Operating a command on the remote machine.
3. Expecting password or (yes/no) request and authorize it.

I get an error (I thing that it occures at the last part (3) of the
password request).
I don't have any errors when trying to operate the script without the
last password.
Here is the script:

import pexpect
import sys
import re
import os
import getopt

PROMPT = "\$|\%|\>"


class SSH:
def __init__(self, user, password, host):
self.child = pexpect.spawn("ssh %s@%s"%(user, host))
i = self.child.expect(['assword:', r'yes/no'],
timeout=120)
if i==0:
self.child.sendline(password)
elif i==1:
self.child.sendline("yes")
self.child.expect("assword:", timeout=120)
self.child.sendline(password)
self.child.expect(PROMPT)

def command(self, command, password):
"""send a command and return the response"""
self.child.expect(PROMPT)
self.child.sendline(command)
j = self.child.expect(['assword:', r'yes/no'],
timeout=120)
if j==0:
self.child.sendline(password)
elif j==1:
self.child.sendline("yes")
self.child.expect("assword:", timeout=120)
self.child.sendline(password)
self.child.expect(PROMPT)

# response = self.child.before
# return response

def close(self):
"""close the connection"""
self.child.close()


if __name__=="__main__":

ssh = SSH(sys.argv[1], sys.argv[2], sys.argv[3])
command=sys.argv[4]
print command
print "Password: " + sys.argv[2]
responce=ssh.command(command, sys.argv[2])
ssh.close()
print responce


I'm waiting for your ideas.
Thanks,
Gil H.

 

[Ganesan Rajagopal]

class SSH:
def __init__(self, user, password, host):
self.child = pexpect.spawn("ssh %s@%s"%(user, host))

Try adding the following line here

self.child.logfile = sys.stdout

That should give you some clue.

Ganesan

 

[Gil_H]

Try adding the following line here

self.child.logfile = sys.stdout

That should give you some clue.

Ganesan

Thanks,

That's all i needed!