Labview 2021: SSH function - Not interactive

[GirishVrishab]

There is a new function called "OpenSSH Exec" available in LabVIEW 2021. On calling this function and sending Username, Password, IP and Linux command, i am getting the response. But the challenge here is its not interactive - My Requirement is - when i send a Linux command, i need wait for parameter and then enter a value and then wait for 2nd parameter, again enter value and so on till all parameters are feeded with values. This works perfectly well when i try with command line ssh. But when i send same Linux command on above LabVIEW function, it responds with all parameters in 1 shot without waiting for my input value. Image shown below for reference. Any one has worked on ssh function in LabVIEW and have any suggestions to handle this? I suspect this function is sending return key internally till some End of text/response is received.

[crossrulz]

NI is supposedly working on a session-based SSH (see the current LabVIEW Roadmap).  What I do currently is use a .NET library (SSH.NET) and I built a class wrapper around this library.

[rolfk]

Another option is to use the Encription Compendium library from https://lvs-tools.co.uk/software/encryption-compendium-labview-library/

Not free but it beats trying to cook your own LabVIEW library if you just want to use something rather than DYO (develop your own).

[arohr]

Hey Girish

Did you solve this? I am having the exact same problem you posted

Please let me know

Ana

[GirishVrishab]

Hey arohr,

From NI Labview, it's not possible to have interactive SSH session. Every time we poll on SSH in labview, it creates a new instance. So, i had to use Python method and call it from Teststand wherever SSH session was needed.

Thanks

Girish

[arohr]

ok, thanks

I ended up using third-party ALAB SSH toolkit

Ana

[Jody29]

How did you go about using the python method to call an SSH session?

[GirishVrishab]

I have used Paramiko library (available online). Its pretty simple to use.

[Jody29]

Do you have to call it from testStand or would the library load directly if I use the native python module within Labview?