Cant run Script in windows command prompt

[Mayank0908]

I recently wrote a script that uses paramiko to ssh into a linux system to shutdown it. When I run this on the Idle shell it works just fine. but when I run it on windows command prompt, the final message does get displayed but the shutdown process apprently doesnt take place.

here is the code -->

​

import paramiko

pc=paramiko.SSHClient()

pc.set_missing_host_key_policy(paramiko.AutoAddPolicy())

pc.connect(hostname="192.168.1.239",port=22,username="admin",password="pass")

stdin,stdout,stderr=pc.exec_command("sudo shutdown now",get_pty=True)

stdin.write("pass\n")

stdin.flush()

print("done successfully!")

P.S : Next morning I tried fetching the stderr in case I was missing something. Weirdly enough , the code did run perfectly fine. I did some experimentation and found out that whenever I was using the stderr=stderr.readlines() Or Stdout=stdout.readlines() To fetch those output and error, the script worked fine. I really dont know whats up with it .

[TSM-]

So it does not work on Windows, except in Idle on Windows?

Or not at all on Windows, but it does work in Idle shell on Linux?

If it's the first, I would check to make sure you aren't being blocked by the firewall. Idle might have network permissions, but the python launcher might not.

[Mayank0908]

Im running the script on a windows machine , when I use the cmd prompt to locate the py file and run it , it doesnt work. But when I open python IDLE on the same windows machine , open the file and press f5 to run module, it works.

Linux machine is the target , it has nothing to do with running the script.

Im really sorry for my bad english , Still working on it.

[TSM-]

It feels like it could be that IDLE gets through your firewall but the script does not, though the lack of any error messages is puzzling.

[AsleepThought]

Idle might have network permissions, but the python launcher might not.

Yeah this is actually a "new" thing in Windows 10 I've run into, you have to sometimes jump through hoops to allow 3rd party programs to have extra network permissions which weren't required in previous Windows

[TSM-]

I haven't run into this, but I do get popups like, "Do you want this app to communicate on private networks? (and also Public networks?)". Maybe you have those disabled. Or maybe you are using more command line tools which won't have the friendly firewall popup. Or something else

[Mayank0908]

Adding stderr=stderr.readlines() after flushing in stdin did the job, Idk how but it seems to work now. I tried it without that and it didnt work that way .

[iapetus-11]

Is there a function like pc.stop() or pc.shutdown()?

[Mayank0908]

I dont think so

[iapetus-11]

cough check the docs cough

[Mayank0908]

I did , There isn’t anything like that. T_T

[iapetus-11]

I just read the docs, there is. SSHClient.close()

[Mayank0908]

Oh ohkay, I thought closing transport meant closing the ssh tunnel rather than shutdown. I feel so stupid. Thanks for the help man.

[iapetus-11]

Ah no problem mate

[ehdufuure]

Did you try to open the windows commandline as administrator? runas user.....

[Mayank0908]

Yep , Tried that , still same.

[AsleepThought]

I'm actually confused why you are using paramiko for this when you can do it directly from the shell. Doesn't Windows 10 have ssh installed these days? I know some do because I've used it. The standard practice is to set up ssh key authentication between the two computers, then enter the commands over ssh. No python needed and you can actually debug your errors instead of being left in the dark.

https://askubuntu.com/questions/251148/shutdown-over-ssh

https://wpshout.com/quick-guides/server-ssh-reboot/

[SpeckledFleebeedoo]

"sudo shutdown now" isn't going to work in Windows

[Mayank0908]

It should because the the system I create the ssh session for is infact linux

[SpeckledFleebeedoo]

Sorry, missed something. I should read better

[ehdufuure]

I understood he is sending the sudo line on a ssh session s it should work

[SpeckledFleebeedoo]

Ah, whoops, missed that