Shulou(Shulou.com)06/01 Report--

This article mainly introduces the CentOS7 command line how to link wifi, the article is very detailed, has a certain reference value, interested friends must read it!

1. First, switch to the super administrative user

[user@localhost] $su root

2. Check the currently available network cards. The ones marked in red are the network cards. Not all of them are the same.

[root@localhost] $iw dev

Phy#0

Interface wlp2s0

Ifindex 3

Wdev 0x1

Addr a4:db:30:84:4b:1c

Type managed

The above is the print information of the unconnected network, and if it is already connected, it is as follows:

[root@localhost] # iw dev

Phy#0

Interface wlp2s0

Ifindex 3

Wdev 0x1

Addr a4:db:30:84:4b:1c

Ssid liylr

Type managed

Channel 11 (2462 MHz), width: 40 MHz, center1: 2452 MHz

Ssid is the name of the broadcast channel, that is, your wireless network signal, and the broadcast channel is the last

3. View the initial status before the connection

[root@ localhost] # ifconfig wlp2s0

Wlp2s0: flags=4098

Mtu 1500

Ether 60:d8:19:cc:74:84 txqueuelen 1000 (Ethernet)

RX packets 13547 bytes 13381624 (12.7 MiB)

RX errors 0 dropped 0 overruns 0 frame 0

TX packets 12659 bytes 1974514 (1.8 MiB)

TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

4. Test whether the network has been linked

[root@ localhost] # iw wlp2s0 link

Not connected.

5. Obtain SSID

[root@ localhost] # iw wlp2s0 scan | grep SSID

Command failed: Network is down (- 100)

The wireless network is not activated, activate it first.

[root@ localhost] # ifconfig wlp2s0 up

[root@ localhost] # ifconfig wlp2s0

Wlp2s0: flags=4099

Mtu 1500

Ether 60:d8:19:cc:74:84 txqueuelen 1000 (Ethernet)

RX packets 13547 bytes 13381624 (12.7 MiB)

RX errors 0 dropped 0 overruns 0 frame 0

TX packets 12659 bytes 1974514 (1.8 MiB)

TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

6. View all available wireless network signals

[root@localhost] # iw wlp2s0 scan | grep SSID

SSID: USER-20150101NS_Network_2

SSID: Tenda_17BEF8

SSID: PC-20140723DBVC_Network_1

SSID: 123

SSID: Tenda_0A6410

SSID: xiaohui

SSID: Tenda_51E4F0

SSID: Nobody Can

SSID: TP-LINK_3C479

7. Connect to the wireless network

[root@localhost] # wpa_supplicant-B-I wlp2s0-c mtu 1500

Inet 192.168.168.139 netmask 255.255.255.0 broadcast 192.168.168.255

Inet6 fe80::62d8:19ff:fecc:7484 prefixlen 64 scopeid 0x20

Ether 60:d8:19:cc:74:84 txqueuelen 1000 (Ethernet)

RX packets 13567 bytes 13386147 (12.7 MiB)

RX errors 0 dropped 0 overruns 0 frame 0

TX packets 12682 bytes 1979923 (1.8 MiB)

TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

The above is all the contents of the article "how to Link wifi on the CentOS7 Command Line". Thank you for reading! Hope to share the content to help you, more related knowledge, welcome to follow the industry information channel!

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.