iwconfig needs root privileges to get Link Quality

[garodimb]

Operating System: Ubuntu 14.04 X86_64
Output of iwconfig:
wlan0 IEEE 802.11abg ESSID:"IIITB-Zone-BM"
Mode:Managed Frequency:2.437 GHz Access Point: A0:D3:C1:B4:DE:D1
Retry short limit:7 RTS thr:off Fragment thr:off
Power Management:off

Output of iwconfig with root privileges:
wlan0 IEEE 802.11abg ESSID:"IIITB-Zone-BM"
Mode:Managed Frequency:2.437 GHz Access Point: A0:D3:C1:B4:DE:D1
Bit Rate=72 Mb/s Tx-Power=200 dBm
Retry short limit:7 RTS thr:off Fragment thr:off
Encryption key:off
Power Management:off
Link Quality=63/70 Signal level=-47 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0

[vik-y]

Thanks for the valuable info Mahendra. :)

[vik-y]

Can anyone check if they are able to see link quality with iwconfig command in ubuntu 14.04 without root/sudo?

I am able to see link quality without root/sudo in Ubuntu 16.04.