How can you get the SSH return code using Paramiko?

Question

client = paramiko.SSHClient() stdin, stdout, stderr = client.exec_command(command) 

Is there any way to get the command return code?

It's hard to parse all stdout/stderr and know whether the command finished successfully or not.

Answer 1

A much easier example that doesn't involve invoking the "lower level" channel class directly (i.e. - NOT using the client.get_transport().open_session() command):

import paramiko  client = paramiko.SSHClient() client.set_missing_host_key_policy(paramiko.AutoAddPolicy()) client.connect('blahblah.com')  stdin, stdout, stderr = client.exec_command("uptime") print stdout.channel.recv_exit_status()    # status is 0  stdin, stdout, stderr = client.exec_command("oauwhduawhd") print stdout.channel.recv_exit_status()    # status is 127 

Answer 2

SSHClient is a simple wrapper class around the more lower-level functionality in Paramiko. The API documentation lists a recv_exit_status() method on the Channel class.

A very simple demonstration script:

import paramiko import getpass  pw = getpass.getpass()  client = paramiko.SSHClient() client.set_missing_host_key_policy(paramiko.WarningPolicy()) client.connect('127.0.0.1', password=pw)  while True:     cmd = raw_input("Command to run: ")     if cmd == "":         break     chan = client.get_transport().open_session()     print "running '%s'" % cmd     chan.exec_command(cmd)     print "exit status: %s" % chan.recv_exit_status()  client.close() 

Example of its execution:

$ python sshtest.py Password:  Command to run: true running 'true' exit status: 0 Command to run: false running 'false' exit status: 1 Command to run:  $