How to receive an e-mail alert when your linux server or linux VPS restarts

Here is a quick tip on how to receive an e-mail alert if your linux server or linux VPS restarts:

1. Log into your linux server or VPS using ssh.
2. Type in crontab -e into the commandline.
            Depending on the default text editor, it could be nano or vi. Here are the directions for vi:
3. Press insert button on your keyboard.
4. Then type in @reboot echo "Rebooted, now online" | mail -s "`hostname` REBOOTED" you@yourdomain.com
5. Then type in :wq to save and quit the vi text editor.

If your default text editor is nano, then the commands to type in are:

3. Find a new line or create one by pressing the Enter key.
4. Now type in on one line:

@reboot echo "Rebooted, now online" | mail -s "`hostname` REBOOTED" you@yourdomain.com

5. Then press CTRL and X on the keyboard to save.
6. Press Y to save the changes. Press Enter to exit.

If you want to send the e-mail to multiple people, edit the line to show this instead:

@reboot echo "Rebooted, now online" | mail -s "`hostname` REBOOTED" -c "user2@yourdomain.com" you@yourdomain.com

Now you will receive an e-mail alert when your server or VPS reboots. Very handy in troubleshooting issues with your VPS provider or your own server.