#!/bin/sh

usage() {
	cat << EOF
Usage:
 $0 [OPTIONS]
 $0 -h
 $0 -c "echo 'online'"

OPTIONS:
  -h            Show this text
  -c CMD        Command to execute if online
EOF
}

CMD=""

while getopts "hc:" OPTION; do
    
	case "$OPTION" in
		h)
			usage
			exit
			;;
		c)
			CMD=$OPTARG
			;;
	esac
done

if [ -z "$CMD" ]; then
    echo "No command given."
    usage
    exit 2
fi

if ping -c1 8.8.8.8 2>&1 >/dev/null; then
    $CMD
fi