[Ilugc] to detect wireless networks in debian

[narendra babu]

Hello All ,
 
 
i have installed debian in my dell laptop , I am trying to look for wifi access points near to me .
 
Some of the options i tried ,
 
I could not  look the wifi tower switched on in the laptop , i tired to switch on using the button supplied with the laptop , it was working fine before in windows before and when i reinstalled with debian its not blinking.
 
I tried below approach
sudo apt-get install wpasupplicant
sudo apt-get install network-manager-gnome network-manager
sudo gedit /etc/network/interfaces
Comment out everything other than “lo” entries in that file and save the file
Create a file called /etc/default/wpasupplicant, add entry ENABLED=0 and save the file
sudo touch /etc/default/wpasupplicant
Rebooted system 
 
No luck i could not see any wireless networks displayed 
 
 
Just curious is there anyway i can switch on the wirless button using command line 
 
thanks in advance 
 
Thanks
Narendra