Script to notify if a login is detected from an admin user on a computer

admin-notify.sh

#!/usr/bin/env bash

ADMINISTRATOR1="admin_user1"
ADMINISTRATOR2="admin_user2"

MY_IP="$(ifconfig | grep "inet " | grep -Fv 127.0.0.1 | awk '{print $2}')"
MY_IP="$MY_IP"
ACCOUNTS="$(who)"

if echo "$ACCOUNTS" | grep --quiet -e "$ADMINISTRATOR1" -e "$ADMINISTRATOR2"
then
	ACCOUNT="$(echo $ACCOUNTS | grep -oh -e $ADMINISTRATOR1 -e $ADMINISTRATOR2)"
	MESSAGE="$ACCOUNT logged in to $MY_IP"
	curl -X POST -H 'Content-type: application/json' \
		--data "{\"text\":\"$MESSAGE\"}" \
		https://hooks.slack.com/services/XXXXXXXXXXXXXXX/OOOOOOOOOOOOOOOOOOO 
	echo "$MESSAGE"
fi