Adhoc alias example; to be sourced

Adhoc.sh

adhoc() {
if [ -z ${1+x} ];
    then echo -e "Run this using: \nadhoc on wlan0\nadhoc off";
    return 1
else

ACTION=$1
WIFI_INTERFACE=$2

case $ACTION in
  on|start)
    [[ $WIFI_INTERFACE = "" ]] && echo Wifi interface missing && return 2

    echo Starting Adhoc network on interface $WIFI_INTERFACE
    echo 1 > sudo tee /proc/sys/net/ipv4/ip_forward
    sudo service network-manager stop
    sleep 1
    sudo ip link set $WIFI_INTERFACE down
    sudo iw $WIFI_INTERFACE set type adhoc
    sudo iwconfig $WIFI_INTERFACE essid 'body'
    sudo iwconfig $WIFI_INTERFACE key 1234567890
    sudo ip link set $WIFI_INTERFACE up
    sudo ip addr add 192.168.1.$ROBOT_ID/24 dev $WIFI_INTERFACE
    iwlist $WIFI_INTERFACE scan > /dev/null
    return 0
    ;;
  off|stop)
    echo Restarting network-manager
    sudo service network-manager start
    return 0
    ;;
  *)
    echo -e "Run this using: \nadhoc on wlan0\nadhoc off";
    return 1
    ;;
esac
fi
}