gistfile1

#!/bin/sh
# wifiscan

# Wireless interface
iface='wlan0'

# Extract info and format the output
(echo ESSID~~~Channel~~~Quality~~~Encryption && \
 echo "---~~~---~~~---~~~---" && \
 iwlist $iface scan | \
 sed -n -e 's/.*ESSID:\(.*\)/\1/p' \
        -e 's/.*Channel:\([^ ]*\)/~~~\1/p' \
        -e 's/Encryption key:\(.*\)/~~~\1/p' \
        -e 's/.*Quality=\([^ ]*\)\/100.*/~~~\1/p' | \
 xargs -n4 echo) | \
\
awk -F~~~ '{print $1 "~~~" $3 "~~~" $4 "~~~" $2}' | \
column -tx -s ~~~