How to connect to a wireless network from the Ubuntu command line

At times i encountered with a weird problem in ubuntu am connected to wifi still am not able to ping i checked dns etc everything seems fine and wifi is connected in network manager but still no net connection then i tried connecting to the wifi network through terminal that worked and i got connection here is how i did it.

$ sudo iwlist eth1 scan

This scan lists every available access point.

Screenshot from 2014-03-14 22:31:44


Now we got the ESSID from the command now issue the below command

sudo iwconfig eth1 essid "BSNL_AP"

Now run dhclient to get an ip address

sudo dhclient eth1

Now try pinging your luck

Happy Hacking 🙂