ssh from inside python? Terrible idea?

I'm trying to send a command to imagesnap on a remote machine on my LAN.

I looked up how to make python do ssh, and seems like it's possible ala:

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 commands.getstatusoutput("ssh user:pass@192.168.0.99 'imagesnap'")

as per http://stackoverflow.com/questions/3586 ... ith-python

but when I try this in Indigo I get an error. A python error about "commands" being undefined.

Am I heading the wrong way? Do I need some "commands" module? Is it a terrible idea in the first place?

You need to add the path to ssh.
When this is called from within indigo no environment variables are set. So the terminal session knows nothing about anything.

it is /usr/bin/ssh



Sent from my iPhone using Tapatalk

One more question: what do you want to do with it, just get status back or get a return value/ string?
Also you need to do
xxx= commands.....
Then check xxx.
If xxx=="whatever": indigo.server.log(" ok")

Otherwise you don't know what happened


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I'm trying to make the remote computer run a command line tool called imagesnap, which takes a picture. And I'm saving it to the drop box on the indigo server.

but the error I'm getting when I try to run the python command suggests that the problem is with

Code: Select all

commands.getstatusoutput

rather than with the ssh.

I'm afraid I don't understand this next bit at all:

Code: Select all

xxx= commands.....
Then check xxx.
If xxx=="whatever": indigo.server.log(" ok")


[jay (support)]

The Python commands module was deprecated a while ago. Use the subprocess module instead.

I think I'd look at the solution that uses the paramiko library (the best solution on that stackoverflow page as represented by the green checkmark). If it's available for Python 2.6 that looks to be the easiest solution.

As a general rule, however, Python does an excellent job of just about every kind of network communication, even though it may require a 3rd party library. In face, aside from communicating with other Mac apps, Python will pretty much always be a better alternative.

This should work:

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import subprocess
userID  = "xxx"
passWD = "xxx"
ipNumber="1.1.1.1"
ret = subprocess.Popen("/usr/bin/ssh "+userID+":"+passWD+"@"+ipNumber+" 'imagesnap'", shell=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE).communicate()
indigo.server.log("return text :" + ret[0])
indigo.server.log("error text : " + ret[1])


Karl

This should work:

Code: Select all

import subprocess
userID  = "xxx"
passWD = "xxx"
ipNumber="1.1.1.1"
ret = subprocess.Popen("/usr/bin/ssh "+userID+":"+passWD+"@"+ipNumber+" 'imagesnap'", shell=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE).communicate()
indigo.server.log("return text :" + ret[0])
indigo.server.log("error text : " + ret[1])


Karl

Well duh, I just noticed there's an option in Indigo to run a shell script.

That's all I need.

Thanks guys!