cbb@cbb-Inspiron-5448:~$ sudo su
[sudo] cbb 的密碼：
root@cbb-Inspiron-5448:/home/cbb# iwconfig
wlp3s0 IEEE 802.11abgn ESSID:”scut-student”
Mode:Managed Frequency:5.785 GHz Access Point: 60:0B:03:FE:3D:C0
Bit Rate=6 Mb/s Tx-Power=22 dBm
Retry short limit:7 RTS thr:off Fragment thr:off
Encryption key:off
Power Management:off
Link Quality=44/70 Signal level=-66 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0
enp2s0 no wireless extensions.
lo no wireless extensions.
root@cbb-Inspiron-5448:/home/cbb# iwconfig wlp3s0 txpower off
root@cbb-Inspiron-5448:/home/cbb# iwconfig
wlp3s0 IEEE 802.11abgn ESSID:off/any
Mode:Managed Access Point: Not-Associated Tx-Power=off
Retry short limit:7 RTS thr:off Fragment thr:off
Encryption key:off
Power Management:off
enp2s0 no wireless extensions.
lo no wireless extension
總之禁用掉所有 no wireless extension上面的東西