[SOLVED] SSH remote command: Pipe remote output to local machine?

kenneho · 12-05-2012, 02:46 AM

Hi all,

I'm running a command such as this:

Code:

ssh user@remote.example.com "python script.py"

When the script finishes, it's output is returned to my local server. What I would like to get working is having the script output continiously directed to my local server, so that I don't have to wait for the script to finish to get the output.

Is there a way to get this working?

Best regards,
kenneho

druuna · 12-05-2012, 03:35 AM

All the output generated by a script is shown locally the moment the script prints/echo's it.

You need to alter your python script.

kenneho · 12-06-2012, 01:13 AM

Quote:

Originally Posted by druuna

All the output generated by a script is shown locally the moment the script prints/echo's it.

You need to alter your python script.

Thanks, I think you're right. I tried this command:

Code:

ssh user@remote.example.com "date; sleep 5; date"

which output data at the moment the commands echo it. But with the python script, it seems to delay the output until the script has completed. In my script I have plain "print" statements, so I'm puzzled as to what may be causing the delay. Anyone got any ideas?

druuna · 12-06-2012, 01:19 AM

Quote:

Originally Posted by kenneho

But with the python script, it seems to delay the output until the script has completed. In my script I have plain "print" statements, so I'm puzzled as to what may be causing the delay. Anyone got any ideas?

You do need to know that I never programmed in python, but if it is anything like perl then it could be an output buffering issue.

A quick search comes up with this: Python output buffering

kenneho · 12-06-2012, 01:32 AM

Quote:

Originally Posted by druuna

You do need to know that I never programmed in python, but if it is anything like perl then it could be an output buffering issue.

A quick search comes up with this: Python output buffering

Excellent, it was indeed a python buffering issue. When using "python -u script.py" it now output the info immediately.
Thank you for your help.

druuna · 12-06-2012, 01:35 AM

Can you put up the [SOLVED] tag.
- above the first post -> Please Mark this thread as solved if you feel a solution has been provided.
- -or- -
- first post -> Thread Tools -> Mark this thread as solved

kenneho · 12-06-2012, 01:37 AM

Quote:

Originally Posted by druuna

Can you put up the [SOLVED] tag.
- above the first post -> Please Mark this thread as solved if you feel a solution has been provided.
- -or- -
- first post -> Thread Tools -> Mark this thread as solved

Done.