Once I connect to a remote server as follows,
transport.connect(username=username, password=password)
sftp = paramiko.SFTPClient.from_transport(transport)
I can do sftp.listdir() and see that there are some gzip files on the remote server, like example.gz.2016. How can I access the text of this file through the sftp connection, without actually downloading the file?
Your question has two parts:
How to view the content of a zip file from the command line
How to execute remote commands and get the output using python¶miko
First things first: How to list the content of a zip file on the console.
less can look into zip files, so in your case, executing less example.gz.2016 should give you a list of files inside the zip archive
Second: how to execute commands remotely.
import paramiko
ssh = paramiko.SSHClient()
# next is needed if your keys are not yet known on the client.
ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
ssh.connect(HOST_NAME, username=USER, password=PASSWORD)
stdin, stdout, stderr = ssh.exec_command('less ' + zipfilename)
for line in stdout.readlines():
# here you will have your listing
print (line)
for errline in stderr.readlines():
# Don't forget to check the error output
print ('***', errline)
Good Luck!
EDIT
If you need a sFTP connection to the same server, you need to get it from your ssh connection like this
sftp = ssh.open_sftp()
Related
so I m very new to python
I have a devices.txt file that includes all the IPs and nothing else (ex 10.10.10.1, 10.10.10.2 etc ..)
I managed to get the output I want but I cannot find a way to get the script to go through the list and save the output to a txt file
so far I have
import paramiko
ssh = paramiko.SSHClient()
ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
#bypass the key missing issue
ssh.connect('10.10.10.1', username='cisco', password='xxxxxxx')
#connect to device
stdin, stdout, stderr = dssh.exec_command('sh ip route')
#execute the Cisco command on the device
output = stdout.readlines()
print(output)
#print the output on the command above
if ssh.get_transport().is_active() == True:
print('Closing Connection')
ssh.close()
#Check if the connection is still open and then close it
So yeah ..
any idea how to grab the IP's from that list instead of me running manually changing the IP and running the script and ..also .. saving the output in a txt file (1 file for all the devices)
Thanks !!!
I want to list all the files in my server. But it returns empty like this []. What can I do? And what is wrong with my code? I am using a module called paramiko.
command = "ls"
ssh = paramiko.SSHClient()
ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
ssh.connect(host, port, username, password)
stdin, stdout, stderr = ssh.exec_command(command)
lines = stdout.readlines()
print(lines)
Your code has nothing to do with SFTP. You are executing ls command in remote shell.
To list files using SFTP, use SFTPClient.listdir_attr:
sftp = ssh.open_sftp()
for entry in sftp.listdir_attr():
print(entry.filename)
Obligatory warning: Do not use AutoAddPolicy – You are losing a protection against MITM attacks by doing so. For a correct solution, see Paramiko "Unknown Server".
I am new to Python and sorry for my bad english.
I'm trying to save a file "toto.txt" from my HDD "d:" to my Synology NAS.
So I'll use paramiko for this, here is the code :
import paramiko
import os
ip_address = "my nas ip"
username = "my username"
password = "mypass"
utilisateur = os.getenv("USERNAME") // to get Windows username
remote_path = f"{utilisateur}/test.txt" // the file downloaded
local_path = "d:/toto.txt" //the file stored on my pc
ssh_client = paramiko.SSHClient()
ssh_client.set_missing_host_key_policy(paramiko.AutoAddPolicy())
ssh_client.connect(hostname=ip_address,username=username,password=password)
print("Connexion OK >", ip_address)
stdin, stdout, stderr = ssh_client.exec_command(f'mkdir {utilisateur}') //creating folder for the
user
sftp = ssh_client.open_sftp()
sftp.put(local_path,remote_path) // trying to send the file
sftp.close()
ssh_client.close()
i am not getting error but nothing is happening.
The folder is successful created but no file is sending in it.
Have someone an idea?
thanks a lot
If Paramiko does not throw any error, the upload was successful. The file just possibly ended in different location than you wanted/than you look to.
At least for a test, if not permanently, try an absolute absolute path. Make no guesses, use the exact path you see in your GUI SFTP client.
Another possibility is that the server automatically processes the uploaded file somehow and moves it away.
I'm trying to load a .csv file stored on a FTP Server (SFTP protocol). I'm using Python in combination with pysftp library. On the FTP server, the CSV file is inside a .zip file. Is there a way to open the zip and then retrieve only the csv file inside it?
Thank you in advance,
import pysftp
cnopts = pysftp.CnOpts()
cnopts.hostkeys = None
# Make connection to sFTP
with pysftp.Connection(hostname,
username=sftp_username,
password=sftp_pw,
cnopts = cnopts
)
with pysftp.cd(download_directory):
with sftp.cd('download_directory'):
print(f'Downloading this file: {filename}')
sftp.get(filename, preserve_mtime=True)
sftp.close()
If you have ssh access to the remote host and know enough about the remote path to the zip file you want and the zip utilities on that host, you can use your ssh client to run the unzip command remotely and capture its output. Here, my target is a linux machine and the zipfile is in the login user's home directory path. I can use the paramiko ssh client to do the work
Its a good idea to log into the remote server via ssh and practice to see what the path structure is like
import sys
import paramiko
import shutil
def sshclient_exec_command_binary(sshclient, command, bufsize=-1,
timeout=None, get_pty=False):
"""Paramiko SSHClient helper that implements exec_command with binary
output.
"""
chan = sshclient._transport.open_session()
if get_pty:
chan.get_pty()
chan.settimeout(timeout)
chan.exec_command(command)
stdin = chan.makefile('wb', bufsize)
stdout = chan.makefile('rb', bufsize)
stderr = chan.makefile_stderr('rb', bufsize)
return stdin, stdout, stderr
# example gets user/pw from command line
if len(sys.argv) != 3:
print("usage: test.py username password")
exit(1)
username, password = sys.argv[1:3]
# put your host/file info here
hostname = "localhost"
remote_zipfile = "tmp/mytest.zip"
file_to_extract = "myfile"
ssh = paramiko.SSHClient()
ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
ssh.connect(hostname, username=username, password=password)
unzip_cmd = "unzip -p {} {}".format(remote_zipfile, file_to_extract)
print("running", unzip_cmd)
stdin, out, err = sshclient_exec_command_binary(ssh, unzip_cmd)
# if the command worked, out is a file-like object to read.
print("writing", file_to_extract)
with open(file_to_extract, 'wb') as out_fp:
shutil.copyfileobj(out, out_fp)
I want to go to a path on a remote SFTP server and verify if the file is present. If the file is present, then I want to open the file and update its contents.
Is it possible with SFTP in Paramiko?
Paramiko SFTP client has SFTPClient.open method that is an equivalent of regular Python open function. It returns a file-like object, which you can then use as if you were editing a local file:
ssh = paramiko.SSHClient()
# ...
ssh.connect(...)
sftp = ssh.open_sftp()
with sftp.open("/remote/path/file.txt", "r+") as f:
f.seek(10)
f.write(b'foo')