init change notification

S20slack

#! /bin/sh
### BEGIN INIT INFO
# Provides:             slackcat
# Required-Start:       $remote_fs $syslog
# Required-Stop:        $remote_fs $syslog
# Default-Start:        2 3 4 5
# Default-Stop:         0 1 6
# Short-Description:    OpenBSD Secure Shell server
### END INIT INFO

API="https://hooks.slack.com/services/xxxx/xxxx/xxxxxxxxxxxx"

case "$1" in

  start)
        echo "system is booting up" | /usr/local/bin/slackcat --url "$API"
        ;;

  stop)
        echo "system is shutting down" | /usr/local/bin/slackcat --url "$API"
        ;;
esac