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(Python) SSH Exec (Execute Command Line)

Shows how to execute a command on an SSH server and retrieve the command output.

Chilkat Python Downloads

Python Module for Windows, Linux, MAC OS X,
Solaris, FreeBSD, and ARM Embedded Linux

import sys
import chilkat

#  Important: It is helpful to send the contents of the
#  ssh.LastErrorText property when requesting support.

ssh = chilkat.CkSsh()

#  Any string automatically begins a fully-functional 30-day trial.
success = ssh.UnlockComponent("Anything for 30-day trial")
if (success != True):
    print(ssh.lastErrorText())
    sys.exit()

#  Connect to an SSH server:

#  Hostname may be an IP address or hostname:
hostname = "192.168.1.108"
port = 22

success = ssh.Connect(hostname,port)
if (success != True):
    print(ssh.lastErrorText())
    sys.exit()

#  Wait a max of 5 seconds when reading responses..
ssh.put_IdleTimeoutMs(5000)

#  Authenticate using login/password:
success = ssh.AuthenticatePw("myLogin","myPassword")
if (success != True):
    print(ssh.lastErrorText())
    sys.exit()

#  Open a session channel.  (It is possible to have multiple
#  session channels open simultaneously.)

channelNum = ssh.OpenSessionChannel()
if (channelNum < 0):
    print(ssh.lastErrorText())
    sys.exit()

#  The SendReqExec method starts a command on the remote
#  server.   The syntax of the command string depends on the
#  default shell used on the remote server to run the command.
#  On Windows systems it is CMD.EXE.  On UNIX/Linux
#  systems the user's default shell is typically defined in /etc/password.

#  Here are some examples of command lines for <b>Windows SSH servers</b>:

#  Get a directory listing:
cmd1 = "dir"

#  Do a nameserver lookup:
cmd2 = "nslookup chilkatsoft.com"

#  List a specific directory.  Given that the shell is CMD.EXE, backslashes must
#  be used:
cmd3 = "dir \\temp"

#  Execute a sequence of commands.  The syntax for CMD.EXE may be found
#  here: http://technet.microsoft.com/en-us/library/bb490880.aspx.  Notice how the commands
#  are separated by "&&" and the entire command must be enclosed in quotes:
cmd4 = "\"cd \\temp&&dir\""

#  Here are two examples of command lines for <b>Linux/UNIX SSH servers</b>:

#  Get a directory listing:
cmd5 = "ls -l /tmp"

#  Run a series of commands (syntax may depend on your default shell):
cmd6 = "cd /etc; ls -la"

#  Request a directory listing on the remote server:
#  If your server is Windows, change the string from "ls" to "dir";
success = ssh.SendReqExec(channelNum,"ls")
if (success != True):
    print(ssh.lastErrorText())
    sys.exit()

#  Call ChannelReceiveToClose to read
#  output until the server's corresponding "channel close" is received.
success = ssh.ChannelReceiveToClose(channelNum)
if (success != True):
    print(ssh.lastErrorText())
    sys.exit()

#  Let's pickup the accumulated output of the command:
cmdOutput = ssh.getReceivedText(channelNum,"ansi")
if (ssh.get_LastMethodSuccess() != True):
    print(ssh.lastErrorText())
    sys.exit()

#  Display the remote shell's command output:
print(cmdOutput)

#  Disconnect
ssh.Disconnect()

 

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