How to upload, download, and remotely execute commands for the python module paramiko

Using python to remotely log on to the host and execute commands or upload and download files through sftp, there is a good module paramiko module to demonstrate these functions, which is very convenient to use, you can learn. I wrote several small programs to illustrate how to use this module.

1: connect to a remote linux host and execute the command

 
 

  
  
#!/usr/bin/env python 
  
  
import paramiko   
  
  
hostname='192.168.0.102'  
  
  
username='root'  
  
  
password='abc'   
  
  
port=22     
  
  
paramiko.util.log_to_file('paramiko.log')          
  
  
s=paramiko.SSHClient()                 
  
  
s.set_missing_host_key_policy(paramiko.AutoAddPolicy())          
  
  
s.connect(hostname = hostname,port=port,username=username, password=password)          
  
  
stdin,stdout,stderr=s.exec_command('free;df -h')          
  
  
print stdout.read()          
  
  
s.close()  
 
 

The execution result is as follows:

 
 

  
  
             total       used       free     shared    buffers     cached 
  
  
Mem:       2074940    2057420      17520          0      42416    1867968 
  
  
-/+ buffers/cache:     147036    1927904 
  
  
Swap:      2096472        240    2096232 
  
  
Filesystem            Size  Used Avail Use% Mounted on 
  
  
/dev/sda1              30G   12G   17G  42% / 
  
  
none                 1014M     0 1014M   0% /dev/shm 
  
  
/dev/sda3             2.0G  289M  1.6G  16% /var 
  
  
/dev/sdb1             135G   14G  115G  11% /data 
  
  
/dev/sdc1             135G  127G  880M 100% /data1 
  
  
/dev/sdd1             135G   99G   30G  78% /data2 
 
 

2: connecting to a remote linux host to upload and download the file paramiko module is implemented using SFTP protocol)

 
 

  
  
#! /Usr/bin/env python
  
  
Import paramiko, datetime, OS
  
  
Hostname = '1970. 168.0.102'
  
  
Username = 'root'
  
  
Password = 'abc123'
  
  
Port = 22
  
  
Local_dir = '/tmp /'
  
  
Remote_dir = '/tmp/test /'
  
  
Try:
  
  
T = paramiko. Transport (hostname, port ))
  
  
T. connect (username = username, password = password)
  
  
Sftp = paramiko. SFTPClient. from_transport (t)
  
  
# Files = sftp. listdir (dir_path)
  
  
Files = sftp. listdir (remote_dir)
  
  
For f in files:
  
  
Print''
  
  
Print '###################################### ###'
  
  
Print 'ininning to download file from % s % s' % (hostname, datetime. datetime. now ())
  
  
Print 'downloading file: ', OS. path. join (remote_dir, f)
  
  
Sftp. get (OS. path. join (remote_dir, f), OS. path. join (local_dir, f) # download
  
  
# Sftp. put (OS. path. join (local_dir, f), OS. path. join (remote_dir, f) # upload
  
  
Print 'Download file success % s' % datetime. datetime. now ()
  
  
Print''
  
  
Print '###################################### ####'
  
  
T. close ()
  
  
Failed t Exception:
  
  
Print "connect error! "
 
 

Execution result:

 
 

  
  
#########################################  
  
  
Beginning to download file  from 192.168.0.102  2012-11-05 15:49:01.334686  
  
  
Downloading file: /tmp/test/wgetrc Download file success 2012-11-05 15:49:05.955184   
  
  
##########################################   
  
  
 
  
  
#########################################  
  
  
Beginning to download file  from 192.168.0.102  2012-11-05 15:49:05.955342  
  
  
Downloading file: /tmp/test/xinetd.conf Download file success 2012-11-05 15:49:10.929568   
  
  
##########################################   
  
  
 
  
  
#########################################  
  
  
Beginning to download file  from 192.168.0.102  2012-11-05 15:49:10.929740  
  
  
Downloading file: /tmp/test/warnquota.conf Download file success 2011-12-05 15:49:14.213570   
  
  
##########################################  
 
 

There are a lot of usage, specific can see the official documentation: http://www.lag.net/paramiko/docs/

This article from the "Wang Wei" blog, please be sure to keep this source http://wangwei007.blog.51cto.com/68019/1058726