CODEWITHSUNDEEP
linuxpython-3.xubuntu
Indranil
Indranil

Reputation: 77

linux command is not working in python subprocess

I am trying to scan all available wifi devices using python. I wrote below code to get SSID,BSSID and device information

results = subprocess.check_output(["sudo", "nmcli", "-f", "SSID", "BSSID", "DEVICE", "dev", "wifi"])

But it is giving me error- "bssid not understood"

enter image description here

when I run the below command in terminal it is working fine.

sudo nmcli -f SSID,BSSID,DEVICE dev wifi

If I remove BSSID and DEVICE then it is working fine. And I am getting all the ssids

results = subprocess.check_output(["sudo", "nmcli", "-f", "SSID",  "dev", "wifi"])

I could not understand what is going wrong.

I am using 

Python-3.6.8
Ubuntu-18.04.2 LTS

Upvotes: 1

Views: 524

Answers (1)

hiro protagonist
hiro protagonist

Reputation: 46859

you need to pass the arguments as 

["sudo", "nmcli", "-f", "SSID,BSSID,DEVICE",  "dev", "wifi"]

if the last command line really works. note that there is one argument "SSID,BSSID,DEVICE".

you could also generate the list using shlex:

import shlex

args = shlex.split("sudo nmcli -f SSID,BSSID,DEVICE dev wifi")
# ['sudo', 'nmcli', '-f', 'SSID,BSSID,DEVICE', 'dev', 'wifi']

Upvotes: 2

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