How to Set Up Login Alerts

Step 1: Create Login Alert Script

sudo nano /etc/profile.d/login-alert.sh

Add:

#!/bin/bash
echo "User $USER logged in from $SSH_CLIENT on $(date)" | mail -s "SSH Login Alert" admin@example.com

Step 2: Make Executable

sudo chmod +x /etc/profile.d/login-alert.sh

Step 3: Test by Logging In

ssh user@server