Environment variable differences when using Paramiko

The SSHClient.exec_command by default does not allocate a pseudo terminal for the session. As a consequence a different set of startup scripts is (might be) sourced (particularly for non-interactive sessions, .bash_profile is not sourced). And/or different branches in the scripts are taken, based on an absence/presence of TERM environment variable. To emulate the default Paramiko … Read more

Some Unix commands fail with ” not found”, when executed using Python Paramiko exec_command

The SSHClient.exec_command by default does not run shell in “login” mode and does not allocate a pseudo terminal for the session. As a consequence a different set of startup scripts is (might be) sourced, than in your regular interactive SSH session (particularly for non-interactive sessions, .bash_profile is not sourced). And/or different branches in the scripts … Read more

Is there a simple way to get rid of junk values that come when you SSH using Python’s Paramiko library and fetch output from CLI of a remote machine?

It’s not a junk. These are ANSI escape codes that are normally interpreted by a terminal client to pretty print the output. If the server is correctly configured, you get these only, when you use an interactive terminal, in other words, if you requested a pseudo terminal for the session (what you should not, if … Read more

How to scp in Python?

Try the Python scp module for Paramiko. It’s very easy to use. See the following example: import paramiko from scp import SCPClient def createSSHClient(server, port, user, password): client = paramiko.SSHClient() client.load_system_host_keys() client.set_missing_host_key_policy(paramiko.AutoAddPolicy()) client.connect(server, port, user, password) return client ssh = createSSHClient(server, port, user, password) scp = SCPClient(ssh.get_transport()) Then call scp.get() or scp.put() to do SCP … Read more

Paramiko “Unknown Server”

I experienced the same issue and here’s the solution that worked out for me: import paramiko client = paramiko.SSHClient() client.set_missing_host_key_policy(paramiko.AutoAddPolicy()) client.connect(‘127.0.0.1’, username=username, password=password) stdin, stdout, stderr = client.exec_command(‘ls -l’) This is to set the policy to use when connecting to a server that doesn’t have a host key in either the system or local HostKeys … Read more