[#](#) Connect to wifi network from command line in linux #

For full article see [the blackmoreops site:](https://www.blackmoreops.com/2014/09/18/connect-to-wifi-network-from-command-line-in-linux/)

1. Find Available Wifi adapters.

    `# iw dev`

2. Check Device Status.

   Check to see if the adapter is up/down.

   `# ip link show DEVICE_NAME`

   (where DEVICE_NAME is wlan0, eth0 etc).
   Look for the word UP inside the brackets in the first line of output

3. Bring up the Wifi interface.

    `# ip link set wlan0 up`

    You can check the device status again as in step 2.

4. Check the connection status.

    `# iw wlan0 link`

5. Scan to Find the Wifi network.

    `# iw wlan0 scan`

6. Generate a wpa/wpa2 config file.

    `# wpa_passphrase WIFI-SSID >> /etc/wpa_supplicant.conf`
    `# networkpassword`

7. Connect to wifi network.

    Once there is a configuration file it can be used to connect to the network.

    `# wpa_supplicant -B -D wext -i wlan0 -c /etc/wpa_supplicant.conf`

        where -B means run in background
              -D specifies the the wireless driver (wext is generic wireless driver).

    You can then check connection status as in step 4.

8. Get an IP using dhclient.

    `# dhclient wlan0`

    IP address can then be vewrified with:

    `ip addr show wlan0` or `ifconfig wlan0`

    Then we check that we have the proper routing rules.

    `ip route show`

    If we need to add routing manually:

    `ip route add default via 10.0.0.138 dev wlan0`

9. Test connectivity.

    Ping google to check connectivity.

    `# ping 8.8.8.8`