这是本文档旧的修订版！

随手记一份笔记，以后慢慢整理。然后利用movepage插件，移动到相应的目录下。

小米WIFI Linux 驱动

Ubuntu 20.04: Connect to WiFi from command line

ubuntu 查看无线网卡的命令：

$ ip a
3: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000
    link/ether e4:5f:01:29:71:5e brd ff:ff:ff:ff:ff:ff
    inet 192.168.0.136/24 brd 192.168.0.255 scope global dynamic wlan0
       valid_lft 2203sec preferred_lft 2203sec
    inet6 fe80::e65f:1ff:fe29:715e/64 scope link 
       valid_lft forever preferred_lft forever

或者

$ apt install wireless-tools
$ iwconfig
wlan0     IEEE 802.11  ESSID:"UPC1647EDF"  
          Mode:Managed  Frequency:2.412 GHz  Access Point: 54:67:51:26:DD:D3   
          Bit Rate=72.2 Mb/s   Tx-Power=31 dBm   
          Retry short limit:7   RTS thr:off   Fragment thr:off
          Encryption key:off
          Power Management:on
          Link Quality=54/70  Signal level=-56 dBm  
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:0   Missed beacon:0

eth0      no wireless extensions.

lo        no wireless extensions.