fix-router

#!/bin/bash
ip route show
cmd="iwlist $(ifconfig | grep -Po '^w\w+') scan"
sudo -nv &> /dev/null
if [ $? -eq 0 ]; then
  cmd="sudo $cmd"
else
  echo ""
  read -p "sudo is recommended to scan wireless networks. Run with sudo? [N/y]" yn
  case $yn in
    [Yy]* )
      cmd="sudo $cmd";
      sudo -v
  esac
fi
echo ""
echo "Scanning wireless networks to find least congested signal..."
echo "Channels 1, 6, and 11 don't overlap with each other and are supported by all US devices"
$cmd | grep \(Channel | sort