How to connect the internet via wifi on BeagleBone Green Wireless, and update APT package.

* Preparation
Thick and short USB micro cable
Linux host computer with being able to provide USB power as much as possible like usb 3.0 and higher.

* Doing things
Connect USB cable between BBGW, and Linux host. and then, ssh connect to 192.168.7.2

# ssh debian@192.168.7.2

.....


debian@beaglebone:~$
debian@beaglebone:~$ sudo connmanctl
Error getting VPN connections: The name net.connman.vpn was not provided by any connmanctl> enable wifi
Error wifi: Already enabled
connmanctl> scan wifi
Scan completed for wifi
connmanctl> services
    DESKTOP-7MMLAUO 1038 wifi_2cf7f106571a_4445534b544f502d374d4d4c41554f2031303338_managed_psk
    U+zone               wifi_2cf7f106571a_552b7a6f6e65_managed_ieee8021x
    FREE_U+zone          wifi_2cf7f106571a_465245455f552b7a6f6e65_managed_none
    LGU+_POLY            wifi_2cf7f106571a_4c47552b5f504f4c59_managed_psk
connmanctl> agent on
Agent registered
connmanctl> connect wifi_2cf7f106571a_4
wifi_2cf7f106571a_4445534b544f502d374d4d4c41554f2031303338_managed_psk
wifi_2cf7f106571a_465245455f552b7a6f6e65_managed_none
wifi_2cf7f106571a_4c47552b5f504f4c59_managed_psk
connmanctl> connect wifi_2cf7f106571a_4
wifi_2cf7f106571a_4445534b544f502d374d4d4c41554f2031303338_managed_psk
wifi_2cf7f106571a_465245455f552b7a6f6e65_managed_none
wifi_2cf7f106571a_4c47552b5f504f4c59_managed_psk
connmanctl> connect wifi_2cf7f106571a_4445534b544f502d374d4d4c41554f2031303338_managed_psk
Agent RequestInput wifi_2cf7f106571a_4445534b544f502d374d4d4c41554f2031303338_managed_psk
  Passphrase = [ Type=psk, Requirement=mandatory, Alternates=[ WPS ] ]
  WPS = [ Type=wpspin, Requirement=alternate ]
Passphrase? $(user_passwd)
Connected wifi_2cf7f106571a_4445534b544f502d374d4d4c41554f2031303338_managed_psk
connmanctl> quit
debian@beaglebone:~$ ifconfig -a
SoftAp0   Link encap:Ethernet  HWaddr a0:f6:fd:8a:04:fb 
          inet addr:192.168.8.1  Bcast:192.168.8.255  Mask:255.255.255.0
          inet6 addr: fe80::a2f6:fdff:fe8a:4fb/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:36 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:0 (0.0 B)  TX bytes:8421 (8.2 KiB)

lo        Link encap:Local Loopback 
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:65536  Metric:1
          RX packets:370 errors:0 dropped:0 overruns:0 frame:0
          TX packets:370 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1
          RX bytes:29149 (28.4 KiB)  TX bytes:29149 (28.4 KiB)

usb0      Link encap:Ethernet  HWaddr a0:f6:fd:8a:04:f0 
          inet addr:192.168.7.2  Bcast:192.168.7.255  Mask:255.255.255.0
          inet6 addr: fe80::a2f6:fdff:fe8a:4f0/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:1516 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1166 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:102420 (100.0 KiB)  TX bytes:397352 (388.0 KiB)

wlan0     Link encap:Ethernet  HWaddr 2c:f7:f1:06:57:1a 
          inet addr:192.168.137.71  Bcast:192.168.137.255  Mask:255.255.255.0
          inet6 addr: fe80::2ef7:f1ff:fe06:571a/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST DYNAMIC  MTU:1500  Metric:1
          RX packets:14 errors:0 dropped:0 overruns:0 frame:0
          TX packets:72 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:1911 (1.8 KiB)  TX bytes:16732 (16.3 KiB)

debian@beaglebone:~$ sudo apt update