Useful scripts

Originally developed for use at work, it's just as useful in other contexts, so I have reproduced it here.

sigstr.sh

#!/bin/bash
# need some means of selecting $device
sudo iw $device scan | 
        awk '/^BSS/ { print $2 }; /signal/ { print $2, $3, "\f" }' |
        sed 's/(on$//'
# each result will look like:
#   00:11:22:33:44:55
#   -72.00 dBm
# additionally, they will be separated by "\f" characters