ssh - How to scp in Python?

Ssh - How to scp in Python?

In Python, you can use the paramiko library to implement SCP (Secure Copy Protocol) functionality. Paramiko is a Python implementation of the SSHv2 protocol, and it provides support for secure file transfers.

Here's an example of how you can use paramiko to perform an SCP transfer:

import paramiko def scp_upload(local_path, remote_path, hostname, username, password): transport = paramiko.Transport((hostname, 22)) transport.connect(username=username, password=password) scp = paramiko.SSHClient() scp._transport = transport with scp.open_sftp() as sftp: sftp.put(local_path, remote_path) scp.close() # Example usage local_file_path = 'path/to/local/file.txt' remote_file_path = 'path/to/remote/file.txt' hostname = 'your_remote_host' username = 'your_username' password = 'your_password' scp_upload(local_file_path, remote_file_path, hostname, username, password)

Make sure to replace 'path/to/local/file.txt', 'path/to/remote/file.txt', 'your_remote_host', 'your_username', and 'your_password' with your actual values.

Keep in mind that using a password for authentication may not be the most secure method. It's recommended to use key-based authentication for better security.

Additionally, you can explore other Python libraries such as pysftp for a more straightforward interface for SCP, but paramiko is widely used and provides a comprehensive set of features for SSH-related tasks.

Examples

  1. Use Paramiko Library for SCP:

    import paramiko ssh = paramiko.SSHClient() ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy()) ssh.connect('your_server', username='your_username', password='your_password') scp = ssh.open_sftp() scp.put('local_file.txt', 'remote_file.txt') scp.close() ssh.close()

    Description: Utilizes the Paramiko library to establish an SSH connection and perform SCP (Secure Copy Protocol) from a local file to a remote server.

  2. SCP with Key Authentication:

    import paramiko private_key_path = '/path/to/your/private/key' key = paramiko.RSAKey(filename=private_key_path) ssh = paramiko.SSHClient() ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy()) ssh.connect('your_server', username='your_username', pkey=key) scp = ssh.open_sftp() scp.put('local_file.txt', 'remote_file.txt') scp.close() ssh.close()

    Description: Uses key-based authentication instead of a password for the SSH connection.

  3. SCP from Remote to Local:

    import paramiko ssh = paramiko.SSHClient() ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy()) ssh.connect('your_server', username='your_username', password='your_password') scp = ssh.open_sftp() scp.get('remote_file.txt', 'local_file.txt') scp.close() ssh.close()

    Description: Performs SCP to copy a file from a remote server to the local machine.

  4. Use pysftp Library for SCP:

    import pysftp cnopts = pysftp.CnOpts() cnopts.hostkeys = None # Disable host key checking with pysftp.Connection('your_server', username='your_username', password='your_password', cnopts=cnopts) as sftp: sftp.put('local_file.txt', 'remote_file.txt')

    Description: Utilizes the pysftp library to establish an SCP connection and copy a file from a local machine to a remote server.

  5. SCP with Progress Bar:

    import paramiko from tqdm import tqdm ssh = paramiko.SSHClient() ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy()) ssh.connect('your_server', username='your_username', password='your_password') scp = ssh.open_sftp() src = 'local_file.txt' dest = 'remote_file.txt' with tqdm(total=os.stat(src).st_size, unit='B', unit_scale=True) as bar: scp.put(src, dest, callback=lambda x, y: bar.update(y)) scp.close() ssh.close()

    Description: Incorporates a progress bar using the tqdm library to show the SCP transfer progress.

  6. SCP Using Fabric Library:

    from fabric import Connection with Connection('your_server', user='your_username', connect_kwargs={'password': 'your_password'}) as c: c.put('local_file.txt', 'remote_file.txt')

    Description: Utilizes the Fabric library to simplify SCP in a more high-level manner.

  7. SCP with Key Authentication Using Fabric:

    from fabric import Connection private_key_path = '/path/to/your/private/key' with Connection('your_server', user='your_username', connect_kwargs={'key_filename': private_key_path}) as c: c.put('local_file.txt', 'remote_file.txt')

    Description: Performs SCP using key-based authentication with the Fabric library.

  8. SCP with Proxy Jump:

    import paramiko proxy_jump_host = 'proxy_jump_host' target_host = 'your_server' key_path = '/path/to/your/private/key' proxy_jump = paramiko.ProxyCommand(f'ssh -i {key_path} -q -W %h:%p {proxy_jump_host}') with paramiko.SSHClient() as ssh: ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy()) ssh.connect(target_host, username='your_username', key_filename=key_path, sock=proxy_jump) scp = ssh.open_sftp() scp.put('local_file.txt', 'remote_file.txt') scp.close()

    Description: Sets up SCP with a proxy jump host, allowing the transfer through an intermediate server.

  9. SCP with Multiple Files:

    import paramiko ssh = paramiko.SSHClient() ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy()) ssh.connect('your_server', username='your_username', password='your_password') scp = ssh.open_sftp() scp.put('local_file1.txt', 'remote_file1.txt') scp.put('local_file2.txt', 'remote_file2.txt') scp.close() ssh.close()

    Description: Copies multiple local files to the remote server using SCP.

  10. SCP with Recursive Directory Copy:

    import paramiko import os def scp_put_dir(ssh, local_dir, remote_dir): scp = ssh.open_sftp() for root, dirs, files in os.walk(local_dir): for file in files: local_path = os.path.join(root, file) remote_path = os.path.join(remote_dir, os.path.relpath(local_path, local_dir)) scp.put(local_path, remote_path) scp.close() ssh = paramiko.SSHClient() ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy()) ssh.connect('your_server', username='your_username', password='your_password') scp_put_dir(ssh, 'local_directory', 'remote_directory') ssh.close()

    Description: Implements a function for recursively copying a local directory to a remote server using SCP.

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