wifit - an iwconfig tool

Published on 2007-02-08 21:09:00+00:00
Linux   networking   wifi  

I've recently installed Mepis Linux on a couple of laptops (a Compaq Presario 2195US and a Dell Latitude D610, both of which use NdisWrapper for wifi drivers).I'm fairly mobile, so I needed a way to quickly change my wireless settings. I wrote this simple bash script to let me do that, and I thought I'd just share it.

## wifit - the wifi tool  
## This is a script that accepts a wifi-enabled interface,   
## essid, and an optional ascii key for a wifi network connection  
if [ $# -lt 2 ] || [ $# -gt 3 ] ; then   
 echo "wifit - the wifi tool"  
 echo "-------------------------------------------------"  
 echo "Usage: wifit   [Optional: ]"  
 echo " Example: wifit wlan0 somenet "  
 echo " Example: wifit wlan0 somenet mypassword "  
 echo "-------------------------------------------------"  
 echo "Setting up wifi connection for "  
 echo "Interface $1, ESSID: $2..."  
 iwconfig $1 essid $2  
 iwlist $1 scan  
 iwconfig $1 mode Managed  
 if [ -n $3 ] ; then  
 iwconfig $1 key restricted s:$3  
 iwconfig $1 key open  
 iwconfig ap any  
 iwconfig commit  

To use this, just copy and paste the code above into a file named wifit (or wifit.sh, or whatever you want). You'll then need to make that file executable using chmod:

chmod a+x wifit.sh

Then, simply call the script (possibly using sudo) passing it any arguments you need:

sudo ./wifit wlan0 somenetwork

Alternatively, you could place this file in your /usr/local/bin or /usr/bin directories so that it would be included in your PATH. If you find this useful, or if you decide to add to is, feel free to Contact Me!