How do you execute multiple commands in a single session in Paramiko? (Python)

Question

def exec_command(self, command, bufsize=-1):     #print "Executing Command: "+command     chan = self._transport.open_session()     chan.exec_command(command)     stdin = chan.makefile('wb', bufsize)     stdout = chan.makefile('rb', bufsize)     stderr = chan.makefile_stderr('rb', bufsize)     return stdin, stdout, stderr 

When executing a command in paramiko, it always resets the session when you run exec_command. I want to able to execute sudo or su and still have those privileges when I run another exec_command. Another example would be trying to exec_command("cd /") and then run exec_command again and have it be in the root directory. I know you can do something like exec_command("cd /; ls -l"), but I need to do it in separate function calls.

Answer 1

Non-Interactive use cases

This is a non-interactive example... it sends cd tmp, ls and then exit.

import sys sys.stderr = open('/dev/null')       # Silence silly warnings from paramiko import paramiko as pm sys.stderr = sys.__stderr__ import os  class AllowAllKeys(pm.MissingHostKeyPolicy):     def missing_host_key(self, client, hostname, key):         return  HOST = '127.0.0.1' USER = '' PASSWORD = ''  client = pm.SSHClient() client.load_system_host_keys() client.load_host_keys(os.path.expanduser('~/.ssh/known_hosts')) client.set_missing_host_key_policy(AllowAllKeys()) client.connect(HOST, username=USER, password=PASSWORD)  channel = client.invoke_shell() stdin = channel.makefile('wb') stdout = channel.makefile('rb')  stdin.write(''' cd tmp ls exit ''') print stdout.read()  stdout.close() stdin.close() client.close() 

Interactive use cases
If you have an interactive use case , this answer won't help... I personally would use pexpect or exscript for interactive sessions.

Answer 2

Try creating a command string separated by \n character. It worked for me. For. e.g. ssh.exec_command("command_1 \n command_2 \n command_3")