After executing a command by Python Paramiko how could I save result?

Question

As you see below, is it possible to save the result? Cause, at second and third stdout.read() I couldn't reach the result.

import paramiko import os dssh = paramiko.SSHClient() dssh.set_missing_host_key_policy(paramiko.AutoAddPolicy()) dssh.connect('192.168.1.250', username='root', password='pass') import os stdin, stdout, stderr = dssh.exec_command('ifconfig') print stdout.read() print ('Sleeping 2 seconds!') os.system('sleep 2') stdin, stdout, stderr = dssh.exec_command('ls -l') print stdout.read() print stdout.read() print stdout.read() dssh.close() 

Answer 1

Imagine that stdout is an ordinary file. What do you expect to get if you call file.read() the second time? -- nothing (empty string) unless the file has changed outside.

To save the string:

output = stdout.read() 

You might find Fabric simpler to use (it uses paramiko to execute commands under the hood).

Answer 2

You can try this Generic API

def ssh_ctrl(ip, user, password,cmd):     ssh = paramiko.SSHClient()     ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())     try:         ssh.connect(hostname=ip, username=user, password=password, timeout=tout, compress = True,look_for_keys=False, allow_agent=False)     except (socket.error,paramiko.AuthenticationException,paramiko.SSHException) as message:         print "ERROR: SSH connection to "+ip+" failed: " +str(message)         sys.exit(1)      stdin, stdout, ssh_stderr = ssh.exec_command(cmd)     out = stdout.read()     stdin.flush()     ssh.close()     return out