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(Chilkat2-Python) SSH Parallel Remote Commands on Single Server

Shows how to execute multiple commands in parallel on a single SSH server and retrieve the command output for each.

Note: This example requires Chilkat v9.5.0.65 or greater.

Chilkat2 Python Downloads

Python Module for Windows, Linux, Alpine Linux,
MAC OS X, Solaris, FreeBSD, OpenBSD,
Raspberry Pi and other single board computers

import sys
import chilkat2

# This example assumes Chilkat SSH/SFTP to have been previously unlocked.
# See Unlock SSH for sample code.

ssh = chilkat2.Ssh()

port = 22
success = ssh.Connect("the-ssh-server.com",port)
if (success != True):
    print(ssh.LastErrorText)
    sys.exit()

# Authenticate using login/password:
success = ssh.AuthenticatePw("theSshLogin","theSshPassword")
if (success != True):
    print(ssh.LastErrorText)
    sys.exit()

# Start several commands on the server.
channel1 = ssh.QuickCmdSend("df")
if (channel1 < 0):
    print(ssh.LastErrorText)
    sys.exit()

channel2 = ssh.QuickCmdSend("date")
if (channel2 < 0):
    print(ssh.LastErrorText)
    sys.exit()

channel3 = ssh.QuickCmdSend("echo hello world")
if (channel3 < 0):
    print(ssh.LastErrorText)
    sys.exit()

# Now collect the results of each command.
pollTimeoutMs = 50
numFinished = 0
while numFinished < 3 :
    # Check to see if anything has finished.
    # QuickCmdCheck returns -1 if there are no errors and nothing else finished
    # QuickCmdCheck returns -2 if there was an error (such as a lost connection)
    # QuickCmdCheck returns a channel number if a channel finished.
    channel = ssh.QuickCmdCheck(pollTimeoutMs)
    if (channel == -2):
        print(ssh.LastErrorText)
        sys.exit()

    if (channel >= 0):
        print("---- channel " + str(channel) + " finished ----")
        print(ssh.GetReceivedText(channel,"ansi"))
        numFinished = numFinished + 1

# --------------
# Sample output:

# 	---- channel 105 finished ----
# 	hello world
# 
# 	---- channel 104 finished ----
# 	Thu Dec 22 17:43:58 CST 2016
# 
# 	---- channel 103 finished ----
# 	Filesystem    512-blocks      Used  Available Capacity  iused     ifree %iused  Mounted on
# 	/dev/disk2    2176716032 265739728 1910464304    13% 33281464 238808038   12%   /
# 	devfs                382       382          0   100%      662         0  100%   /dev
# 	map -hosts             0         0          0   100%        0         0  100%   /net
# 	map auto_home          0         0          0   100%        0         0  100%   /home
# 	/dev/disk3s2      374668    374668          0   100%    93665         0  100%   /Volumes/Google Chrome

 

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