Shell Scripts and Networking to Automate macchanger

fultron · 02-15-2007, 02:58 PM

My school uses MAC filtering, which can become a real pain quite often -- like, for instance, when I switch out wireless cards. I used to have to go into admin controls, network controls, deactivate the card, then run macchanger and reactivate the card. I figured I would share this shell script, as it took me the better part of a day and a half to figure out (JUST found the ifdown command! Before I was editing config files a such) It's relatively simple, and I've seen questions related to this before.

clear
ifdown ath0
macchanger -m xx:xx:xx:xx:xx:xx ath0
ifup ath0
clear
echo "Done. MAC Address Changed."

unSpawn · 02-16-2007, 08:02 PM

Thanks for sharing. I'm sure peopel appreciate it.
Returning the gesture, let's clean up and ameliorate the script a bit:

Code:

#!/bin/sh --
# Set default GNU/Linux shell and don't use CLI args.
# Do some command checking and bail out if command not found.
inPath() { for i in ${PATH//:/ }; do [ -x "$i/$1" ] && return 0; done; }
for x in ifdown ifup macchanger; do inPath "$x" || exit 1; done
ifdown ath0 && echo -n "MAC change: " &&
macchanger -m xx:xx:xx:xx:xx:xx ath0; case "$?" in
0) echo OK; ifup ath0;; *) echo FAILED;; esac
exit 0

HTH