Ubuntu

Displays all installed packages.

3. Working with Multiple Packages:

• Install multiple packages:

  sudo dpkg -i package1.deb package2.deb package3.deb
            
        

You can install multiple .deb packages in a single command by specifying the file names.

To also delete log files like syslog.1 or auth.log.1, modify the find command:

sudo find /var/log -type f \( -name "*.log" -o -name "*.gz" -o -name "*.log.[0-9]" \) -exec rm {} +
            
        

10. Reboot the System

After cleaning logs, it's good practice to reboot the system to ensure services restart and fresh log files are generated:

sudo reboot
            
        

• Access logs: /var/log/apache2/access.log
• Error logs: /var/log/apache2/error.log

You can view the logs using the cat or tail command:

sudo tail -f /var/log/apache2/error.log
            
        

Conclusion

Congratulations! You have successfully installed and configured Apache on your Ubuntu server. You can now host your websites and further customize your Apache setup according to your needs.

Alternatively, you can use an SSL checker tool like SSL Labs to verify the validity of your SSL installation.

Step 5: Auto-Renewal Setup

Let's Encrypt certificates are valid for 90 days. Certbot sets up automatic renewal by default, but it’s good practice to manually test it to ensure it’s working:

sudo certbot renew --dry-run
            
        

If there are no errors, Certbot is successfully configured to automatically renew your certificates before they expire.

If everything is set up correctly, you should see the version of mongosh that you installed.

Step 5: Connect to Your MongoDB Server

Once installed, you can connect to your MongoDB instance. For a local MongoDB instance, run:

mongosh mongodb://localhost:27017
            
        

This will open the MongoDB shell connected to your local database.